TopCoder Statistics - Problem Statement

Problem Statement

You are given the int N and the String partial.

You are only allowed to use the first N uppercase English letters. For example, if N = 3 you may only use 'A', 'B', and 'C'; while N = 26 means that you may use the whole alphabet.

The string partial contains some periods ('.') and some letters. All letters used in partial also belong among the first N uppercase English letters - no other letters will appear in this string.

Your have to replace each period by one of the N allowed letters. Your task is to maximize the number of pairs of consecutive letters in which the two letters differ.

Replace all periods with allowed letters and then return the resulting string. If there are multiple optimal solutions, you may return any one of them.

Definition

Class:: MaxDistinctPairs
Method:: maximize
Parameters:: int, String
Returns:: String
Method signature:: String maximize(int N, String partial)
(be sure your method is public)

Constraints

N will be between 1 and 26, inclusive.
partial will have between 0 and 2,500 characters, inclusive.
Each character in partial will be either '.' or one of the first N uppercase English letters.

Examples

26

"........"

Returns: "ABABABAB"

We can replace each period with any of the 26 uppercase English letters. As the result is a string of length 8, it has 7 pairs of consecutive letters. We can easily make all seven pairs count.
1

"..A.A..A"

Returns: "AAAAAAAA"

The only letter we are allowed to use is 'A'. There is exactly one string we can create. It contains no good pairs of consecutive letters, but as it's the only valid string, it's still the best solution.
6

"A....FA....F"

Returns: "ABCDEFABCDEF"

Again, there are no pairs of consecutive equal letters.
2

"B.A"

Returns: "BAA"

We can only choose between 'A' and 'B' for this '.'. Regardless of what we choose, exactly one of the two pairs of consecutive letters will be good.
1

""

Returns: ""
7

""

Returns: ""

An empty partial string. There are no letters to fill in, so the answer is also an empty string. The empty string contains zero pairs of consecutive letters.
1

"."

Returns: "A"
1

"A"

Returns: "A"
6

"."

Returns: "A"
5

"C"

Returns: "C"
26

"."

Returns: "A"
26

"Z"

Returns: "Z"
1

"...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................."

Returns: "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA"
2

"...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................."

Returns: "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB"
3

"...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................."

Returns: "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB"
2

"A..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................A"

Returns: "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAA"
1

"A.....A"

Returns: "AAAAAAA"
1

"....A....A...."

Returns: "AAAAAAAAAAAAAA"
1

".....A.....A....."

Returns: "AAAAAAAAAAAAAAAAA"
2

"....B...BAB..B..A....A....AABB....ABBB..A.B..BBA.A..A.A.AB..B...A.ABA.AA.BB.A.BBABB....AA.AA.ABBA..A..AB..B.A.B.B..B..A.A.A..A.BB...A.......BAB.BA..B.BBBBB.ABA....BBA.B.BA.......BAA..A.BABB...BA...A....B..BB.A.ABBBA.BA.BBB.B.BBA.AAAAA..A.AAAA.BB............AA..B.ABBB....AA..ABA.ABA.B.A.B.BB.BA..B.A.B..BBA.AAB.BA..B.B.B.BBABA.A..B.AB.AB.A....AB.B.BA..A.AB....A...AA.AAA.B......A...AAB...B..A....B.B..BB.A.BABAB.ABBAAA..A..AA...AA..B.A.BAAABB..B..BB.ABAABAABA..BABA.AA.BB.ABAB..AB.AB..BB..B.AAA...BB...ABA.A...A.BA.B.BAA.BA..BBB.B.AB.AB...A.....ABA...BB.AAABB.BB.B.AAA..BBA.AA..AA.B.BA.B.BBB.AAB..BBA..ABA.BBBA.....B..B..B.BB.A.AB.B..AAABA.B..ABA.A.A.ABB.BA.AAA.AAAB.BB..AB.AB.AA.A.A..BB.A..BB.BBAB.B.B...AA.......B.B.B..AABA..AABABA.AB.ABB.B..BAAB.A.A.B..BB.B.AAA..BB.....A...AABA.AB.AB.B...AB.BBA.A.A..B..BABB.B..A...A..A.AAAABA..ABAAA.B.AB..BBABABBA..A.ABB..ABAABA....AB.BB.AAABB.ABAB..AA....BBB..AAAB.AB..ABBAAA.BBA..B....AAB.A..BB.AB.ABA..BBAB.BA...AA.B...AA...AAAABA.ABBB.A..ABB.A..BB.BBB.A..AABB.BABBBAAA.ABB.....A.....B.A..BA.AB..BBAABB..B..AAB.B.A....BA..ABB......BBBA...B.B...A.ABBA.AA.BA.ABBA.AAAA.B...AAAB..BB.BA.BA..A.B.A.A..A.BBB.BB...B.B.A.A....BAA.B.BAAAB..A.BA.ABBAAA..A.B..AA...AA...AAB..B..A.A..B.......BB.ABA.AA...A..AA.AA.A.B..A....BABBA..A..A..B.B...B.B.BBABAA.AA.B.AAA...A..BB..BA..ABA...B.A.B...A.....A.......BAB..B..A.A...AB.BBAA.B.B..B.A.BBBAA.......BB.A.B.BABA.BB.B..A.BAB.AA.BB.AAA....A.B..ABA.A.....BA...ABAB.ABA...AB..AA.A..BBB..B.BA..A.A.BB....B..AA....BA.ABB.BB.B.A.BBBA....AB.AABA.BB.AAABAA.B....A..A.BA.AAAA..ABAB.AB.ABBBB.BB....AAAB.A.B....A...A..ABA.A.AA...BA.B.A.BABAAA...A.ABAAB..BBB.BA...BB.AAB.AA..A...B.BAA...BBBA.BAABBB.B.AAA.....BBB.ABB...BBA......AAA.AB.....B....B.A...BBB..A.A...BBBA.B..BB.BBA.....B.A..A.AA..BAAA..B...BAA.AB.BAAAA.B.ABA.BABABAA.AABB.BBABA.A.B.AA...A.A.BAA.B..BAB.AB.ABBA.BABA...A..BABABBB......BBA..B.AABBBAAA..BABBBAAABBA.AAA...ABA..B.A..B..BBAB.A.A..BBAB.AA.BA.A.A...A.BB.B..A..B.B.A.B.A.BA.BBAA.BAB.A....BB.A.A..AB.BAA.A.B....B.A..A.A..B..BB.BBA..A.B.A.AA.AAAABB..B."

Returns: "BABABABABABAABABABABAABABAAABBABABABBBABAABAABBABABAABABABAABABAABABABAAABBAAABBABBABABAABAABABBABAABAABAABAAABABAABABABABABAAABBABAABABABAABABABABABABBBBBAABABABABBAABABABABABAABAABAAABABBABABABABABABABAABBAABABBBAABAABBBABABBABAAAAABAABAAAAABBABABABABABABAABABAABBBABABAABAABABABAABAAABABBABABABAAABAABBABAABABABABABABABBABABABABAABAABAABABAABABABABAABABABABABABAABAAAABABABABABABAABABABABABABABABAABBAAABABABAABBAAABAABAAABABAABABAAABAAABBAABAABBAABAABAABABABABABAAABBAABABABABAABAABBAABAAAABAABBABAABABABABAABAABABAAABABABBBABAABAABABAABABABABABAABBAAAABBABBABAAAABABBABAABAAAABABAABABBBAAABAABBABAABAABBBABABAABAABAABABBAABABABABAAABAABABABABABABABBABABAAABAAABABBABABAABAAABABABABBAABABBABBABABABABAAABABABAABABABABAABABAAABABABABAABBABAABAABAABAABAABBABAAAABABBABABAABABAABABABAABABABAABABBABABABABAABABBABABABABABAABAAAABABAABAAAABAABAABBABABBABAABABBABABAABABABAABABBAAAABBAABABABAABABABBBABAAABAABABABBAAAABBABABABABAABAABABBAABAABABABBABABABABAAABABAAABABAAAABABABBBAABAABBAABABBABBBAABAAABBABABBBAAABABBABABAABABAABAABABABABAABBAABBAABABAABABAABABABABAABBABABAABBBABAABABABAABABBABAAABABABBABAAAAABABAAAABAABBABAABABAAABAABABAAABBBABBABABABAABABABABAAABABAAABABAABABABBAAABAAABABAABABAABABAABAABABABABABABABABABBAABABAABABABAAABAABAABABABABABABBABAABAABABABABABABABBABAABAAABAAAABABABABBAABABAABABAABAAABABAABABABABABABAABABAABABABABABABABBAAABABAABAAABBBAABABABAABBAAABABABAABBABABAABABAAAABBAAAABABAAABABABABABABAABABABABABAABABABABABAABABABBBAABABABAABAABBABAABABAABABABABABBABBABAAABBBABABAABAAABAABBAAAABAAABABABABAAABABAAAABAABABAABAABBBBABBABABAAABAAABABABABABABAABABABAABAABAABAAABABAAABABABABAABAABBBABABAABBAAABAAABAABAABABAABAABBBAABAABBBABAAAABABAABBBAABBABABBABABABAAAABABABABABABAABAABAABBBABABABAABBBAABAABBABBABABAABAABAABAABABAAABABABABAABABABAAAAABAABAABABABAABAABBABBABABAABAAABABABAABAAABAABABAABAABBAABABABABABABABABBBABABAABBABABAAABBBAAABABABBBAAABBABAAABABABABABAABABAABBABAABABABBABAAAABABABABABAABBABABABABABAAABAAABAABBAAABABAABABABBAABABAABABAABAABABAABAABAABABABAABBABBABAAABAABAABAAAABBAABA"
2

".BBB.B....A.B.B...BAB.ABBAAA..AA.AA.AA.AB.ABB..A.A.....AA.BAAB.A..A...B..ABBAB...A.ABA.B..A.....BA.A.B..AABA.B.AB.A.BAB.AAABAABB.......AA..A.AA.A..BBBB.B..AA.BAA.B..ABA.ABAABABABA..B.AB..A.AAABA..AB...BB.BA.AA.A....BA.B.B...BABAB..BAAA.BB.B.BBA.BBAA....BBAABA...BA..BB.BA.A.ABB...BABBBB...AB.BBB..AB.ABA.BBAB.AAAB.B.AABB..B.BBB.B.B.BB...AA..BA.....BBAAB.AABABB.BA.BABA.BAA.BA.B.AA.A.B...B..B..BA..ABABB.BBAB.A.A..BAAAAA.A..A.A..AAAB..BA...A..AB.ABB.A..B.B.BBBB.B.BA..A.B...B....B..BAB...BA.A.AA.B.BABAAA...AB..A..B..A.AAA.A.AB.B.ABBBA...AB.A.B.AA.A.AA...BB.B.AB...B.BB..AABBA.BB..B.A..A.BAA..AB........A.B.AB.BAB...BAAA.B.BA..A..ABBAAA.AAAB.B.AA.BBB.....B..B.BA...A.BA.B.A.BBA.B.B.BBBAB..BBA.BAAABB.B.AAAAAB.AA.AAAB.ABB.BAABB.BBB.BBB.A.ABBA.B.AA.AA.BBBAB..BABAA..ABA.BAA..A...A...A.....A..BA.AB..BA.AAB..AB.A.ABBBB.A.AB.BB.AA.A.AB.....BA..AB.AA.BB...AAAA...BA...BBAAA..ABA...BBA.ABB...B..B...AAA....AABB..BAB.ABABB.AA...A..BA.AA.AAA.AB.....BB..AAB.ABBB..AB.ABA...AB..BBAA.AAA.....A.BB..BAAA....BAAB..A...BBA..A..ABBBB.A..BAB..BB..A.BB.BA..B..ABB..AAA...B.BAA..BA.AB..AB.AAA.A.A..ABA.B.B..AAA...B.B.AAAB.A.A....B.ABA.AB..BA..AA.A.B.AA.BBA.BA.A..A..AB.A.BBB.B...BBAA...B.ABB.....B..BA.A.A..AAABAB..A..BBA.AABAABB...B.B.B.A..AABB....ABA.AB.BA..AA..AA.B.A.BB..B..AA...BA..B.AABBA..A.BABBAB.ABBBBBBB..B.....BB.A.AABABBBA.B.AA.A.....ABA.BA.AB.BB.AB..ABAAA.ABA.B.A..BAAAA.BBB.AA.AA.AAABAABAB.AB..AA...B.ABAAAAAA...A..B.A.AA.B.BA......AAB.BAA.B.BAA..BA..BA.BA...B.BA...AAA.AAB.B...BBA..A.BB.BAB.B..BBAB..BAA.A.BBAA......AB.ABA.B.AAAB.BBB.A..ABAB...ABA..BB..BB.A.A.AA..A.A.AA...A.A...BAA..BB.BBBBB..B.BBA.A.AAB...A..A.B.BBAAAA.A.B...AB..BBAAA....BA.B..B.AB.BAA.A..BBABA...BAAA...BAB..B.BA.BB...ABA.B...B......BA.BA....B.AAB.AABAB.AA..A.AABABABAAB.B.AB.AB...A.AA...B.A...B..BBBAA..B..BB.A.ABB..AB.ABB..AB....B.ABBBA.....AAA..B.....BAB....AAA.B.B..B.BB...BA...A..ABAAABA...BBB.AABAB.B..B.AABA..BBAAB.A.B.B.BB.A.AA.AAAB.ABABA.A.B.B..BA.AAABAA..A.BAB.B..A..ABA..BBBA.BA.ABBBB.ABA.BA.ABB.....B..A.BA.BB..BBAAAABB..AB.AAB....B.BB.BB.A.B.A..BAB.A.AA...ABBAB..BB.BB.ABA..B..AAABBABABAA..AAA.B..AA.B.BAB.A.ABBBBBA..AAB...B.AA.A..BA.B.A...B.ABAB.AAB.B..BA...B..ABA.A.B..AAAA.B......ABB...AB..BA.ABBA..BB.BBABBBBB..AB.A.AB....BAA..BB.BA...A.A.AAB..A..A..A...B.BAB...B.B.AA..AB.AA..ABBAABA.ABAAA.BA.A.B..ABA.B.AB.BB.AB.BB...A..ABABABA...A.AA..AA.BBA.AAB.BBBBAAABAA.B..ABB.ABB.AB..B"

Returns: "ABBBABABABAABABABABABAABBAAABAAABAABAABABAABBABABABABABAAABAABAABAABAABABABBABABAABABAABABABABAABABAABABAABAABAABAAABABAAAABAABBABABABAAABAABAABABABBBBABABAAABAAABABABABABAABABABABABAABABABAAABABAABABABBABABAABABABABAABABABABABABAABAAAABBABABBAABBAABABABBAABABAABABABBABABABABBABABABBBBABAABABBBABABAABAABBABAAAABABAAABBAABABBBABABABBABAAABABABABAABBAABAAABABBABAABABAABAAABAABAAABAABABABAABAABABAABABBABBABAABABABAAAAABABAABABAAAABAABABABABAABAABBAABABABABBBBABABABAAABABABABAABAABABABABABABAAABABABAAABABABABABABABABAAABABABABAABBBABABABAAABAAABABAABAABBABAABABABABBABAABBAABBAABAABAAABAABAABABABABABAABAABABABABABAAAABABABAABAABBAAABAAABABAAAABBBABABABAABABABABAABAABAAABBAABABABBBABAABBAABAAABBABAAAAAABAAABAAABAABBABAABBABBBABBBAABABBAABAAABAAABBBABAABABAABAABAABAABAABABABABABABABABABABABAABABAABABABAABABBBBAABABABBAAABABABABABABABAABAAAABBABAAAAABAABABAABBAAABAABABAABBABABBABABAABABAAAABABAAABBAABABAABABBAAABABABABABAABAAABABABABABBABAABAABBBABABAABABABABAABBAABAAABABABAABBAABAAABABABAABABABAABBABAABAABBBBAABABABAABBABAABBABABABABABBABAAABAABABAABABABABABABAAAABABABAABAABABABAAABAABABAAAABAABABABABAABABABAABABAAABAABAAAABBAABABABAABAABAAABBBABABABBAABAABAABBABABABAABABABABAAAABABABABABBABAABAABBABABABABAABAAABBABABABABABABABAAABAAAABAAABBAABABAABAABABABAAABBABAAABABBABAABBBBBBBAABABABABBAABAABABBBAABAAABABABABABAABABABABBAABABABAAABABAABAABABAAAAABBBAAABAABAAABAABABAABABAABAABAABAAAAAABABABABAABAAABABABABABAAABABAAABABAABABABABAABABAABABABABAAABAABABABABBABAAABBABABABAABBABAABAABAABBAABABABAABAABAABAAAABABBBAABAABABABAABABABBAABBAABABAABAABABAABABABABAABAABABBABBBBBAABABBABABAABABAABAAABABBAAAABAABABAABAABBAAABABABAABAABAABABAABABABBABABAABAAABAABABAABABAABBABAABAABABABABABAABAABABABABAAABAAABABAAABAABAABABABAABABAABAABABAABAABAABAABAABAABBBAABABAABBAABABBABABAABBABABABAABAABBBABABABAAABABABABABABABABAAAABABAABABBABABABABABAABAAABABAABBBAAABABABAABAAABABABBAABAAABABABBAABAABAAABAABABABAABABAABABAAABAABAAABABABABABAABABABBBAABABABBBBAABAABABABBABABABABAABAABBAABBAAAABBABABAAABABAABABBABBAAABAABABABAABAABABABBABAABBABBAABABABABAAABBABABAABAAAAABABAAABABABAABABBBBBABAAABABABAAABABABAABAABAABAABABAAABABAABABAABABABABAABABAAAAABABABABABBABAABAABABABBABABBABBABBBBBABABAABABABAABAABABBABABABABABAABABABAABAABAABABABABABABAAABAABAAABAABBAABABABAAAABABAABABABAABAABABBAABABBABAABAABABABABABABAABAAAABBABAABABBBBAAABAAABABABBAABBAABAAB"
2

"ABBA.BA.ABAA.BBA.......AAAA.ABB.B..BA.BAAAB...A.B.B...A...B.A.B.BABBB..AA.B.AAA..BBB.ABA.A.AAA..B.BA.AA.A.B.BBBAB..AABB..BBBA..ABA.B...ABBBABBBBAA.BBAABA...A.ABAAA..ABABAB...AB.A.A.A.BBAA..A.BB.A..BA.BB.B..B.B.BBA.ABAB.BAAB..BBA..B.B.A..B.A.A.BB.A.B.B.BA.BABAA..B.B.AB..A...ABBBBBAB.AA.ABABA..A.AABBAA..BB.B.A..B.B.BAABAAAA.BBBB.B.A.AAAA...BBB.A..ABA..BB.A...ABABA.BB.ABBABB.B...B.B.BB.A.A.AA..B.BBBAB..AAAABA.BAAAB....A...B...AA..BB.BB.B..A.B.AABBB...BABA.BABA.B..AB....B..AAB.B..A..B......B.AAA.ABBB.BABA.BBAA.BBB...A.BBAAABAAB.AB..B.BAA.B.BBBBA.BB.AA.B.AB....BABBBABBA.BA.BB..BB.AABA.BBA.BA.BA.A.ABA.A.BB.B.BA.B.AAB.ABAAB.BAABABB.BBB.B.ABBB.BAAABA.AB.ABA.BAAB.BA.A.AA.ABB.BA.B.BABA.BB...AA.A.ABBA.AA..A.AA.AAB.B..B...AB...B..AAAB..AB.ABAB.BBAABA.AA.A.A.BA..BBAAB.A.AAB.A...BAAB.B...BABBA..BAA.A.A.AABB.A..BB.B...ABBABB.BBAAABB..AA.B..ABAB...BA..BAAAA.A.BAAAB.AAA.B...BA...A..BBAB.B.ABBA..BBA...ABAAAB..BABBBBBBBABBA.A.A.BBBBBBB.B..AB..BBB.AB.AAB.AB.BBB.ABAB.AB.A.B..ABBAB...B..A.B..BA.AA.BBBAABBA..B...B..A..A.BAB.AB.A.A.ABA.AB..BA...B.A.AAAB.AA.B....AA.A..BB...AAA.ABA..AAA.B...A..BAA.BBB..ABAA..BA...AA.B..BB.A.B.ABABBA.AABABA..AB..AAAB.A.AA..AAA.A...AB.B.AABBB.AAA.B.B.BAAAAB.B..A..B.B...A..A...A.B...ABABA.A.AB..A.ABABABAAA.AAABB.B.A.ABAA.B.AA...B.BA..A...AA.A..A..A........BB.ABA...B.BABBB...BBBA....BABB...BBBBBBB.BAABAAAAA..AA.A..A....A.BABAB.ABABAAA..BB.AA.AAA.B.BB.B.ABAAB..BBAABAAA.B.BBA.B..BBBBB..BAABABA.A.BAABA..AB.B..B.BBAAB.B...BBAB.A...A...BABA.A.A..B.BB.AABBA.BAB.AA....BA...AA.BBBABAB.BAB..BA..B.ABBAABAAB.AB..B..ABBAB.A...ABA.A.B.ABABBAAABA.AA.BB.BBAA...AB.AAABB.A.AAAB.AAB.AA..BAA..BABB..B.ABAAB....AB..BB..AABA.....BB.BB.BB.A..B..B..A..B.B.A.ABBA.AB....BAA.BBB.A.BABA.BBBBBAAA.BABBAB.BABABBBA.B.BA.B.A..ABB.BA..AB.BBBAB...BAA.BBBA...B.BAB..B..B..A.AAAB.BA..A.BAAA.BABBA..BAB.BAA..A.BA..B.BAA...A.BB...BAB.BA.AAABB.BAABABAA.B.AB...AABBB.BABB.BBB...B..AB..BB.AA.AA.BBB.BB.ABBAA.BBA..AA.BB.B.....BB..BABAAABA.BB.ABAABA....A.BABBABA.B.AAA....AA.A.BBA...BA.B..A..AAA.AA....A..ABA.B.A.ABAAB..A.A.BA..AA.AA.B.B...AA.A..BBAA.BA.A..B.BABABB.AAAAB.B.A.ABBAABB.B.A...BB...BA..BB..AAAABB.B.BAA.AA....BA..A.BAA.AAB.BAB...B..A.A.B.BB.A.ABAB.AB.A..A...B.A.B.AAABAAABBA.BBB.....BA....ABABBAA..BABBAA.BBAA.B..BBBA..AA.B...AB...B.B.BA.A.A..A.ABB.A.BBBB.AAB....AABA.A.AAAA..B.A.B.AA.BABBAA.A....A.BA.AB...BAB..BB..BAA.B.AAAAB....B.AAA.AABA.A.AB.AB.AB.BB.BA"

Returns: "ABBAABABABAAABBABABABABAAAABABBABAABAABAAABABAAABABABAABAABAAABABABBBABAAABAAAABABBBAABABABAAABABABABAABAABABBBABABAABBAABBBABAABAABABAABBBABBBBAAABBAABABABABABAAABAABABABABAABAABABAABBAABAAABBAABABAABBABAABABABBABABABABAABAABBABABABAABABAABAABBAAABABABAABABAABABABAABABABABABBBBBABAAABABABABAABAABBAABABBABAABABABABAABAAAAABBBBABAABAAAABAABBBAABAABABABBAABABABABAABBAABBABBABABABABABBAABABAABABABBBABABAAAABAABAAABABABABAABABAAABABBABBABABAABAAABBBABABABAABABAABABABABAABABAABABABABABABABAABAAAABABBBABABAABBAAABBBABAAABBAAABAABAABAABABAAABABBBBAABBAAAABAABABAABABBBABBAABAABBAABBAAABAABBAABAABABABABABAABBABABAABAAABAABAABABAABABBABBBABAABBBABAAABABABAABAABAABABABABAABABBABAABABABAABBABAAABABABBABAABAABAABAABABAABABAABABABABAAABABABAABABABBAABABAABABAABABABBAABAABAABAABAABAABABABABABBABABAABABABAABBAABABBABABAABBABBABBAAABBABAAABABABABABABABABAAAABAABAAABAAAAABABABABABABABBABABAABBABABBABABABAAABAABABBBBBBBABBABABAABBBBBBBABABABAABBBAABAAABAABABBBAABABAABAAABABABBABABABABAABAABABAAABBBAABBABABABABABABAAABABAABAABABABABABAABABAABAABAAABAAAABABABAABABABBABAAAABABABAAAAABABAABABAAABBBABABAABABABABAAABAABBAAABAABABBABAABABABAABABAAABAABAABAAAABABABABABAAABBBAAAAABABABAAAABABABABABABABAABAABABAABABAABABABABABABABABABABAAABAAABBABAABABAAABAAABAABABABAABABAABABAABAABABABABABBAABABAABABABBBABABBBABABABABBABABBBBBBBABAABAAAAABAAABABAABABAAABABABAABABAAABABBAAABAAAABABBABAABAABAABBAABAAAABABBAABAABBBBBAABAABABABAABAABABAABABAABABBAABABABABBABAABABABAABABABABABABABBAAABBAABABAAABABABABABAAABBBABABABABAABABABAABBAABAABAABAABABABBABAABABABABAABAABABBAAABABAAABBABBAABABABAAAABBAABAAABAAABAAABABAABABABBAABAABAABABABABAABBABAABABABAABBABBABBAABABAABABABABABAABABBABABABAABAAABBBAAABABAABBBBBAAAABABBABABABABBBAABABAABAABAABBABABAABABBBABABABAAABBBABAABABABAABAABABABAAABABABAAABAAAABABBABABABABAABAAABABABABAABABAABBABABABABABAAABBABAABABAAABAABABAAABBBABABBABBBABABABABAABBAAABAAABBBABBAABBAAABBABAAAABBABABABABBAABABAAABAABBAABAABABABAAABABBABAABAAAABABAAABAABBABAABAABABABAAAABAABABAABAABAABAABABAABABABAABABAAABAAABABABAAABABABBAAABABABABABABABBAAAAABABAABABBAABBABAABAABBABABABABBABAAAABBABABAABAABABABABAAABAABAABABABABABABABAABABBAABABABAABAABAABAABAAABAAAABAAABBAABBBABABABABABAABABBAABABABBAAABBAAABAABBBABAAAABABAABABABABABABABABAABABBAAABBBBAAABABABAABABABAAAABABAAABAAAABABBAABABABAAABABABABABABAABBAABAAABAAAAABABAABAAAABAABABABABAABAABABBABA"
2

".B..B..BAA....B.ABA..BAABBAABAA.B....B...A..A....B.AAA....AAABB.AA..BBBA.AA.AA.BB.A...AB.AABA..A...AB.B.AA...AABB.BBB...B..A...B.AA..B.AB....AB.BBABB.B.AAAA.A...AA...AB..BB..B.B...A...BB..BBA..BA.AA..B..A..A...BAAA..BAA.ABBB.A.BAB.A.ABB.ABB.B..AABB.BAB.....B.A.AAA.BBB..BA..AB.AA.BA.B..AB.B.ABB..BB.ABB...B.A....A.A..BAA...A.......AB.B.B..BA..BB.AB.A..A..B..BABA.AA..B...BAAB.ABABA..ABBA.......AA..BA..A...BB.B.BBBB.A....BB..A..AABBAB......B..B.BBAABBBAA...A...B...BAB.A.B...B.B.AA..A.AB.A..BBA....AAABAA....BA.AA.A..A...BA...AAA.BB.AB.A..A.AB..ABAABA.BB..A..A.AA.B.BBAB..BBBBAAB..B.B.AA.ABB...B.B..A.AA..AB.B...A..BBBA..BA...B.B.B..B.A.AA..A...A.ABBABABABA.A..AABBB.AAA.BB......BA..B..B.BBB.BB..B..BBAAB.....B.A.BB.........AAAA..ABA.BB...AB..A.A...AA...AA.B.AA.ABB...A.....A...AABBBB.AB.BAAAABA...ABA.BB..BA...BA.BB.A..ABAAABB..A..A.ABA...AB..BB..AB.B.AB....A..A.B.B.A.A..A.AA..BBA..BB..BB.A..B.A.BA.B..B.B.A.....A...A....B..B.AA..A.BA.A..AB.BAAABA.A.B.A.A...A.ABBABB..AA.AA.....A.AB.BAA.BBAAB.AB..BBB.AB.........BA.BABA.A.BB.....A.BA.A.BAB.AA....A..A.BB..AA...BAAB.......A.B....BAAB.AB....BB..AAB....A..A.AA.BAA.B.AA.BB...A....B.B..ABAA.BBBB....B.AA..BA..B.AB.B.A.BB..B....B..BB.B.AA.A.BBAA.AA.A.A.A.B..B.BB..A..BA...B..BB.AAAB..BAA.BAA..B.A.B....A.AA..A.A..BA.AAABBA.BA.AA.AA..A..A.BB.BAAAA.A.BB.B.A.B.AAAA...BAB.B.B..BA..BB.B.A.BAA......BBBA...B.......B..AAA.A.B.B.A.AA....BA.AAB...AAA.AB.BA.BBBBAABA..BB..A...BBAAAB.B.B..BABAA.B.B...B....A..BB.BB..BB.A.B..B..B.B.BBAAAB.A..BAA.AB.B..B..BA.ABB.........BAA.BBAAAA.BAB.A..AAAB.BA..BA.BB..BBB.AAABAA.BAB.BAAABAABAAA.BAA.AA.ABB.BBA..ABB...B.AA..AB.AAA.A...AB..B...B.B....B.ABB.ABA.B....AAB...B........A..BBAA.A.AA.BAB.B..ABA.BAB.AA.AB..BBAA.....AA.A..BA..BAB......BA..AA..ABAAAAB.AA.ABBAB.AAB..A.BB.B...AB...BB.A.BB...B....ABA....B..A..A.A.A.B.A..ABB.BAABB.A....BABA..BBB..BBA.B....BBB..B.AAB.B...A..AB.BA...B....AA...BB...A.AB..B.A..BAA..BBB.AB...A.BB.A..B.AA.BAB.B.BBB..B.BB..AB.AA..BB.B.......BA.BBAA...ABA..AAABB.BA..BAB.B....B.AA..BB.AB.A...ABBB.AA.A.AA.B.A.B.....A.A...BA.BA..BB....A.AAB..B.A.BA....AABB.AA..A.B.B...BA.BA.AB....B..AA..A.AA..BBAAAAB..AA.B.BABAAA.AAAA.BABABB.A...BAB.....B."

Returns: "ABAABAABAABABABAABABABAABBAABAAABABAABABAABAABABABAAAABABAAAABBAAABABBBABAABAAABBAABABABAAABABAABABABABAAABABAABBABBBABABABABAABAAABABAABABABABABBABBABAAAAABABABAABABABAABBAABABABAABAABBAABBABABABAABABABABAABAABAAABABAABABBBAAABABAABABBAABBABABAABBABABABABABAABAAAABBBAABABAABAAAABAABABABABAABBAABBAABBABABAABABAABABABAABABABABABABABABABAABABABBAABAABAABABAABABABAABABABABAABAABABABAABBABABABABAABABABAABAABBABABBBBAABABABBABABAAABBABABABAABAABABBAABBBAABABABAABABABABAAABABABABAAABAABABAABABBABABAAAABAABABABABAABABAABAABABABAAAABBAABAABAABABABABAABAABBABABAABAAABABBABAABBBBAABAABABAAABABBABABABABABAABAABABABAABABBBABABABAABABABAABAABAABAABABABABBABABABABABAAABBBAAAAABBABABAABABABAABABBBABBAABAABBAABABABABAAABBABABABABAAAAABAABAABBABAABABABABABAABABAAABAAABABBABAABABABABABAABBBBAABABAAAABABABABAABBAABABAABAABBAABAABAAABBABABAABABABABABAABBABABABAABABABABAAABABAABABAABAABABBABABBAABBAABABAAABAABAABABAABABABABABABABABAABAAABAAABABABAABABAAABABAABAABABABABABBABBABAABAABABABABABABAAABBAABAABAABBBAABABABABABABAABABABAABBABABAAABABAABABAAABABAABAAABBABAABAABAABABABABAAABABAABAABAABABAABBABAABABABABAABAAABAAABAAAABBABAABABABABABABAAABBBBABAABAAABABABABAABABAAABBAABABAABAABBABAAABAABBAABAABABABAABAABABBABABABABAABAABBAAAABAABAAABAABABAAABABABABAABAABABABABAAABBAABABAABAABAABAAABBABAAAABAABBABAAABAAAAABAABABABABAABABABBABAAABAABABABABBBABAABABABABABABAAABAABABAABAABABABABAABABAAAABABABAABBBBAABABABBABABAABBAAABABABAABABAAABABABABABABABABBABBAABBAAABAABAABABABBAAABAABABAABABABAABAABABABBABABABABABAAABBAAAAABABAABAAAABABABABAABBAABBBAAAABAAABABABAAABAABAAAABAABAABABBABBABAABBABABAAABAABAAAABABABABAABABABABABAABAABBAABAABABABAABABABABABABABABABBAABABAAABABABABABAABABAAABABAABBAABABABAABABABABABABABABAABABAAABAABAAAABAAABABBABAAABABAABBABABAABABABBAAABBABABABABABABABABABABAABABAABAABAABBABAABBAABABABABABABBBAABBAABABAABBBAABAAABABABAABAABABABAABABABAABAABBABAABABAABAABABAABABBBAABABAAABBAABABAAAABABABABBBAABABBABABAAABABBABABABABABAABBAABABABABAAAABBABABABABABABAABAAABABBAABAABABABBBAAABABAAABAAABABABAABABAABAABABABBABABABAABAABAAABABABAAABBAAABAAABABABABAABABABABAABABAABAABAABABBAAAABABAAABABABAAABAAAAABABABBAABAABABABABABA"
2

"BB..A.BAABAB.BBB..AB.BBABBBAAAAAAB..B.BBB..A.BAABBAAB.BBBABAAB.BAB...BBAABBAAAB..B.B.BBAAAB.A.ABB.AA..BB.A.ABAAAAABAAABAA.A.B.ABAABBA.BBABAA.AA.A.BBABA.ABBB.BA.A..BA.AB..ABA.A.BB.BBB.BA..B.ABAABB.AABA.....AA.AB.B.BA.A...AAA.A.A.B..BAAB.BBAABAA..BBA.BA.ABB.B..B.A.B.AAABA.BB.AAA...B.BAB.AB...BBA.A.AAAA.AB.B.BA...AB.B...B....A.AAA.BBABAAABB.AA..BA.BBA.A.AA.ABAAA.B.BBAAB.BBBA.AAABAAAAB...BBA.A....B.A.ABBB.AB.B...BB.B.BBAB.BB.AAABB...BAA.BAABBB..A.A.BABB.A.A.ABAA.ABB.A.BA.BBBBA.BABA.BAABAAAAABB.B..A.AB.BA..BA.BA...AA...BA.B..B.BBBB..B.AA.AABABBAA.AB...B.BA.BA.BAAA.AB.ABBABABAA.B..AAAABBABB.ABBA.ABB.BABB..ABAAA.BABAB.B.AB.B..B..B.B...AAAB.BBAAB..B.A.ABBB.ABBBB.BBABBABAA.AABA.BBB.ABA.A.ABBAAA...B.BBABAAA.BBAA..BBAAAB..BA.B..AA.BB.AABA....AAAA.BA..ABA.BBBBABB.B..B...AA.ABBBABABABBBB..BBBBAA.B.AB.BAAB....A..B.AA.B.BAAB.AABAAB.A.BBB.AAAA.BBBABBAABABABB.AA.AB.AB.BAABAABAAAA.BB.BB.AB.ABBBB...AABB.BA.BB.A.BAB.B...BBABB.BBAB.BB.B..BB.B.B..ABB.AAAB.BABBABAAABB..AB.ABA...AAB...B.A..B.BBA.B..BBBBBABBBAA...BBB.A...BA.B.BAB.BA.BBA.AAABABBBABBA.B..A.BB..AAAAB.BB.B..BB.AA.B.AABB.ABBA.B.A..A..B.AB...ABA.ABABAABBBAAAB.A...BBAAB.B.AA.ABABB.A.A.AAABBAA.AAAB.A..AB.A.BBBAA.A.AABBAB...A...B.BAA.BBA.AABB.ABBAABA.B.ABBB.BB.ABBA..BABAA.BAABBBBB.B.A..B..BAB.BA..BABB.BBA.BBAAABAABA.BABA...B.A..A.AABABAAAAB.BB..AB.BB.BB.BA.AA..AA.B..BA.AB.BA.A.ABAA.BBA.BABAAB.ABBBB..BAA.AABABBBBB.A.AB.BAA.BB.AB...AABABABBAAA.A.A.A.AA.B.B.B.BA........A.AA.AA.AA..AA..BABBABBA.BABBAB.A..B...BABBB.AB.A.AB.BABB..AAA.B.B..B.BB.BB.AAA..B.A.ABABBA.AABBABA.BAAB.BB..B..BBBBBB.BBBABB.A.B..A.AA.ABAABBB..A.BAB..A.BBBAAB..A.ABAAAAAAA....ABBB..A.B.B..BBA.BA.B...BBA.BBAA.....BABB..A.AB.A.A.B.ABB..A..BBAABBAAAA..B.ABBA.A....BAB...ABB.B.BB.BAABBABA.AAB.BAAAA.AABA.ABBBBBABAABAA.AAAB.BAB.BB.BABBBBB..AA...AAA..BB.A.B.BBBBAB.A..ABAB.AB.B..AB..B.BBB.A.BABBB.BAABBBAAAAAB..BAB.AA...BB.AA.AA.BB...BBBA.BABABB.A..BBA.BBAB..AAAABA.A.A.BA..BAA.BA..B.BAABAABB.BABABABA.B.....ABBBBAB.AABA..AA.AB.ABBABBBA..A.A.AB.BB..AB.BBB.AA.BBB.AB..BBBA..AA....ABAA.AAA.ABABB.BA.B..B..B..A..BAAB..AAB..A..BB.BA..A.A.A.AABB.BAAAAAAAABAA.B.A.AB...B.AB.AAAA.AABAA.A..B..BAA.AAA.A..B.BABA.....AB.AA.A.AAABABB.BAAB.AABAAAB.AABB..B.BB..AAAABA.ABBA.ABBAB.AA.B.BB..AABAA.A.BB..B.BBB..BAABABBABA.A.BB.ABAB.A..ABBBA.BA.AAAAB..AABBBBB.A.A.BABAAAAA..B..AA.B.B.AA..ABAABB.BBABABABAABB.B.BBB.BBBB.AA..A.BAAB.AB.AB..A...BABA.B.BAA..BB.A.BA..AB.AABBA.A.BB.BB......BABBA.B.BB.BB.ABBB.BB.BABBA.BAAB.B.BB.BABA.AAB.BAA....A.."

Returns: "BBABAABAABABABBBABABABBABBBAAAAAABAABABBBABAABAABBAABABBBABAABABABABABBAABBAAABAABABABBAAABAABABBAAABABBAABABAAAAABAAABAABAABAABAABBAABBABAABAABAABBABABABBBABABABABABABABABABAABBABBBABABABAABAABBAAABABABABAABABABABABABABAAABABAABAABAABABBAABAABABBAABABABBABAABAAABAAAABAABBAAAABAABABABAABABABBABABAAAABABABABABABABABABABABABABAAAABBABAAABBAAABABAABBABABAABABAAAABABBAABABBBABAAABAAAABABABBABABABABAABABBBAABABABABBABABBABABBAAAABBABABAAABAABBBABABAABABBAABABABAABABBAAABAABBBBAABABAABAABAAAAABBABABABABABABABAABABABAABAABAABAABABBBBAABAAABAABABBAABABABABABAABAABAAABABAABBABABAAABABAAAABBABBAABBABABBABABBABABAAAABABABABAABABAABAABABABAAAABABBAABAABAABABBBAABBBBABBABBABAABAABAABBBAABABABABBAAABAABABBABAAAABBAABABBAAABAABAABABAAABBAAABABABAAAAAABABAABAABBBBABBABAABABAAABABBBABABABBBBAABBBBAAABAABABAABABABABABAAAABABAABAAABAABAAABBBAAAAAABBBABBAABABABBAAABABAABABAABAABAAAAABBABBAABAABBBBABAAABBABAABBAAABABABABABBABBABBABABBABAABBABABABABBAAAABABABBABAAABBABABAABABABAABABABAABABABBAABAABBBBBABBBAABAABBBAABAABAABABABABAABBABAAABABBBABBAABABAABBABAAAABABBABAABBAAAABAAABBAABBAABAABAABABAABABAABABABABAABBBAAABAABAABBAABABAAABABABBAABABAAABBAABAAABAABAABAAABBBAABABAABBABABAABAABABAAABBABAABBAABBAABAABAABBBABBAABBABABABAAABAABBBBBABAABABAABABABABABABBABBAABBAAABAABAABABABAABAABAABAABABAAAABABBABABABBABBABABAABAAAABAABABABABABABABAAABBAABABAABAABBBBAABAABAABABBBBBAABABABAAABBAABABAAABABABBAAABABABABAAABABABABABABABABAABAABAABAABAAABABABBABBAABABBABAABABABABABBBAABAABABABABBABAAAABABAABABBABBAAAABABAABABABBABAABBABAABAABABBAABAABBBBBBABBBABBAAABABABAABABAABBBABAABABABAABBBAABABABABAAAAAAABABAABBBABAABABAABBAABAABABABBAABBAABABAABABBABABABAABAABAABBABABABBAABBAAAABABAABBABABABABABABAABBABABBABAABBABABAABABAAAABAABABABBBBBABAABAABAAABABABABBABABBBBBABAABABAAABABBAAABABBBBABAABAABABAABABABABAABABBBAAABABBBABAABBBAAAAABAABABAAABAABBAAABAAABBABABBBAABABABBAABABBAABBABABAAAABABABAABABABAAABABABABAABAABBABABABABAABABABAABBBBABAAABABAAABABAABBABBBABAABABABABBABABABBBAAAABBBAABAABBBABAAABABAABAABAAABABABBABAABAABAABABABABAABABAABABABABBABABAABABABAABBABAAAAAAAABAAABAABABABABAABAAAAABAABAABABABAABAABAAABABABABABABABABABAAABABAAABABBABAABAAABAAABAAABBAABABBABAAAABABABBABABBABAAAABABBABAABAABAABBAABABBBAABAABABBABABAABBAABABAABAABBBAABABAAAABABAABBBBBAABAABABAAAAABABABAAABABAAABAABAABBABBABABABAABBABABBBABBBBAAABAAABAABAABAABABABAABABAABABAABABBAAABABAABAAABBABAABBABBABABAABABBAABABBABBAABBBABBABABBAABAABABABBABABABAABABAABABAABA"
2

"BAAA.AB.BB..AABBBABBABBA.BABBBAAA.BBBAA..A.A.ABBAABABABABB...BAA.BABAB.BBBBA.AB.BB.ABBBBBBB.AA.A.BB.BBBBBBBBBB.AAAB.BAAB.BA.AB.ABABBBABABAA.BABBBBB.B.BBBAA.B.AB.A.AA.BBA.AA.BAA.A..ABAABABAABABA.BBBABBB....BBABBAB.BABA.ABAB.AAAAABBAA.BABBAABA.BAABAA.ABBBA.AABBBA.BBBBAABBBABBBAAABBAABAAB.AAAABA.B.ABBBA.BB.A.BBABA.AA..AA.A.AAABAA...AABB.ABBAABBABBABBABBBABBBABBBABBAAA.BABB..ABAB.AABA..A.BAAA.B.BB.B.A.B.AABB.A.B.AAA.ABAAAABBB.B..ABBAABB.BAAB..ABBA.AB.AAA.BBBBABA.AB.AAAAABBA.BB...BAAAAB.BABBBB.AAAABAAA..BB.ABA...ABBA.BBA.ABBB.ABAAA..BBA.BABBAAAABBAAAABB.A.AB..AAAAAABABAAA.BABBA.B.B..AB.BBBAB..A.AAAABBBABBABA.A..B.B..ABA.ABAABABB.AABAAA.BA...BABAAAA.BA...ABAA...BBBA.BAA..ABAAA.BBABA.ABBAAABA..AA..AA.B..BBABA.ABA.BAAB.BBABBBBAA.BBBBB..BAA.BBABAAABAAAAB.A..ABABBABBA.B.BBABB...BBBBBB..AABAABABBBA.BAAA.BAB.BA.AABBAAB.BBB.B.ABBB.A..BBBAABBA.AAA..BBB.A.ABBBBABBBAABA..A.A..AA.BAA.A..B...BABAB.AA..A.BBA.BA..ABBBBA.BBA.ABA.AB..B.ABBBB.AB.ABAABBABBBBAABA...AAA.AABAB.BA.BBBB.BB.B..BBBAAAAAABB..B.AA.ABBAAAABABBB.BBBA.AAB.BA.BBABABB.BAABAABBBAA.ABB.AB.AABAAAAABBAB.ABAB.AA...AB..BBBBA.BBBBBBBABBA.BBBAA.AB.ABBB.BABB.ABBBAAB..BAA.AAAA.ABB.ABAABBBAB.BBAB.AABBA.B.BBABB.A.BABA.BAB.A.A..BA.A...A.B...BB..AA.BBBBABA.ABB.ABAB.A.AA.ABB.BAAA.ABBBAAB.AA.BA..B.A..BBBB..AAABBB.BBABBA....BA..BBAA..BBAB..B.A.ABBBABA.AB.BAAB.BBAAABBB.AA..BA.A.BABBBBAB..BA..AABB.B.A.ABBBAAABAA.AAABA.BB.BBA.ABABA.BAAAABBAA.BBBAA..BAAAA.A.AABABAAB.BABBB.BBB.BABBAA.AA.ABAAAAA.AAAAAAB.B.BABBAAAAAAB.A.A.ABB...ABBAAB.AAA.A.BB.A.BABB.B.BB.AA.AABB....BB.AAABABBB.BBAA.BBABA.BAABBAABA.BAABBBBABBABB.AAA.BABAABAAB..B.B.A.AB.BBBBAAAABBAB.BBABAABAAA.AABAAABBAA.AA.ABBB....BBABBB...BBB..BA.ABB.BBA.BAAB.ABBABAABB.BBA.AAAB..BABB...B..B.AB.B..BBA.BAABBBBAAAAB.B.BBABABB..A.B.B.B...AB.BB.A.BBB..BAA.A.ABBAAABA..ABBBAA.BAAAABAB..B.BBAAAAAABBABABBBBBBB.B.B.BAABBB..ABA..ABAAABB.A.ABA.B..A.B.AB.BABAB..BAA.BBAAAB.AABABAB.AA.BBA.A.B.B..ABBAAABAAAAB.A..BAA.A.ABBAAABABA.ABBB.A..A.ABAA..A..AA.BAB..ABBABBAAABBABAB.BAA...B.BAB.BBB...AAA.AAA.BA.B..ABBB..B.BABA.BBABB.BABA..A.BA.A.B....A..ABAB.BAABAB...BBAA.BABAABB.AABABBA..AA.A.AAAAAA.BBA.AA.ABBA.ABA..BBBBBABBBABBBABAB.BBAAABBABAA..BAAABBABBAA.BAAB.B...BBAAABBAB.BA.A.A.B.AA..BABBA..AB.A.AAB..AA.BAB..AAB.A.BBABAA.B.BA.B.B.BBABABBAAABBBBBABBAAAA..AAAB..BBABBABAABBB.A.BB.AB.AABBB.BA.ABAAB.A.AABABB..B.AABABABBA.BAABBAAAABA..B.BA.AAB.BAB.AAAAABA.BB..ABBABB.ABAA.ABABBA.AB.BABABAB.AAA.A.AAAA.ABAABBA.ABBAA.ABA..ABA.BBB.BABAA.AAAA..ABBBAABB..A.BBAABAABBAB....AA.AAA.BAAAABBA.A...A.ABAABAAAA..AA.BBBB"

Returns: "BAAABABABBABAABBBABBABBAABABBBAAAABBBAABAABABABBAABABABABBABABAAABABABABBBBABABABBAABBBBBBBAAABAABBABBBBBBBBBBAAAABABAABABABABAABABBBABABAAABABBBBBABABBBAAABAABAABAAABBABAAABAABABAABAABABAABABAABBBABBBABAABBABBABABABABABABAAAAAABBAAABABBAABAABAABAABABBBABAABBBAABBBBAABBBABBBAAABBAABAABAAAAABAABAABBBAABBAAABBABABAABAAABABAAABAABABAABBAABBAABBABBABBABBBABBBABBBABBAAAABABBABABABAAABABAAABAAAABABBABAAABAAABBAAABAAAABABAAAABBBABABABBAABBABAABABABBABABAAAAABBBBABABABAAAAAABBAABBABABAAAABABABBBBAAAAABAAABABBAABABABABBAABBABABBBAABAAABABBAABABBAAAABBAAAABBAABABABAAAAAABABAAAABABBAABABABABABBBABABABAAAABBBABBABABABABABABABABABAABABBAAABAAAABABAABABAAAAABABABABAABAABBBAABAABAABAAAABBABABABBAAABABAAABAAAABAABBABABABAABAABABBABBBBAAABBBBBAABAAABBABAAABAAAABAABAABABBABBAABABBABBABABBBBBBABAABAABABBBAABAAAABABABABAABBAABABBBABAABBBAABABBBAABBABAAABABBBAABABBBBABBBAABABAABABAAAABAABABABABABABABAAABAAABBAABABAABBBBAABBABABABABAABAABBBBAABAABAABBABBBBAABABABAAABAABABABAABBBBABBABAABBBAAAAAABBAABAAABABBAAAABABBBABBBABAABABAABBABABBABAABAABBBAABABBAABAAABAAAAABBABAABABAAABABABAABBBBAABBBBBBBABBAABBBAABABAABBBABABBAABBBAABAABAABAAAABABBAABAABBBABABBABAAABBAABABBABBAAABABAABABAABABABABABABAABABABBABAAABBBBABABABBAABABAABAABABBABAAABABBBAABAAAABABABAABABBBBABAAABBBABBABBABABABABABBAABABBABAABAABABBBABABABABAABABBAAABBBAAABABABAABABBBBABAABABAAABBABAABABBBAAABAABAAABAABBABBABABABAABAAAABBAAABBBAABABAAAABABAABABAABABABBBABBBABABBAABAABABAAAAABAAAAAABABABABBAAAAAABAABABABBABAABBAABAAAABAABBAAABABBABABBAAABAABBABAABBAAAABABBBABBAAABBABAABAABBAABAABAABBBBABBABBAAAAABABAABAABAABABAABABABBBBAAAABBABABBABAABAAABAABAAABBAABAABABBBABAABBABBBABABBBAABABABBABBAABAABAABBABAABBABBABAAABAABABBABABAABAABABAABBAABAABBBBAAAABABABBABABBABAABABABABAABABBAAABBBAABAABABABBAAABABAABBBAAABAAAABABAABABBAAAAAABBABABBBBBBBABABABAABBBABABABAABAAABBAABABAABABAABAABABABABAABAAABBAAABAAABABABAAAABBABAABABABABBAAABAAAABAABABAABABABBAAABABABABBBAABAABABAABAABAAAABABABABBABBAAABBABABABAABAABABABABBBABAAAABAAAABAABABABBBAABABABAABBABBABABABAAABABAABABABABAABABABAABABABABBAAABABAABBAAABABBABAAABABAAAAAAABBABAABABBABABABABBBBBABBBABBBABABABBAAABBABAABABAAABBABBAAABAABABABABBAAABBABABABABAABAAABABABBABAABAABAABABAAABABABAABAAABBABAAABABAABABABBABABBAAABBBBBABBAAAABAAAABAABBABBABAABBBAAABBAABAAABBBABABABAABAABAABABBAABAAABABABBAABAABBAAAABABABABABAABABABAAAAAABAABBABABBABBAABAABABABBABABABABABABAAAABABAAAABABAABBABABBAABABABAABAABBBABABAABAAAABAABBBAABBABAABBAABAABBABABABAABAAAABAAAABBABABABABABAABAAAABAAAABBBB"
2

"BBAB.B.....A.A.BB..A.BBAAA.AA..B.A..BBBABAA..BA.......B.BBB...B.AAAABB..AB..BAA.BBA.A..BB.B.BAAA.BA.BB..B.BA....A.B..A...AB.B.A.A.B.AABB.ABBABBBBA.BBAA..BB.BAAA.BBBBA..BA.ABAA.AA.A.A.......B.AA.BA......A...A.B..A.BABAABA.BBBBABB....BBA.AA.A.ABB.A......A......BBBBABB..AAAA...BA.BB..A.B.BAB..B.BBB.BA..AAAA.B.AB.AA.....AA.BA.....AABBABA..BBBBB....A..A..BAA.A.A..ABBAAABAAA.A.ABBBABAAABA...BBBABAA..ABA.BAA.....A..BB.A...BA.BB..AAAAB..A.BA..B.A.A..AB..A.BA.B.AAABAA...A..AA.A.ABB..AB.B...BBAB.A.BBB...A...AAA..B.B.BBAAABA....A...BBB.AA..BB...BA..BA.BBA....B.B.BABB.ABB.AAAAABB.A.....A.AA.AA.ABAA...ABA.A.BA.ABBB.B.AABBB.B..AB..B.A.B...B.A.AAA..AABA..BB.BAB....ABBB..BB.....BAB.AA....BA...AB.A.A...B.BBA.ABBBA..A....A.A.A.BAA.B.A.A.BA.BB......BBAA..ABAB.A..BAA.BA.B..BAA..ABA.AABAAAB......BAABAB....B.A.B.BB.AB..AA..BB.....A..BBBAA..AA.ABB.B...A..A.B...AB.B.A.BAB...AB.B.A.B.A.B....BAA...ABBBAB.AA.A.AAA.BB.BAA..BAA.BA..ABBAA.BBA.A.B.A.AA.BBA.B.......BAAB.B..AABA.BB.....A....A..AAB.AABBBBABA...BB..BBABA.AA.BBA.B.BA.BBA.AA..AB.....BB..AB.....AA....A..B.A.BB.AB..A.B.ABB.A.BA...B...BBA....BB.BA....BB..BB.A.B..B.....BAA..A.A.AAAA.B..BAA.B..AB.B..AA.BAAAA.BB.BB.ABAAAA...BBB.A.A..BB..BB.BBABA.ABABB..B.BB.BB....AA.B.ABABABA.AABBB.BBBBB....ABA.A.BBA.BBBAAA...ABA..B.A.BAB.A..........BA.BAABBBAAA...BBB.....AAAA.B..BA.ABBAB.BB..B...B.AB.A.B..AAAB....B.B.AA.B.B.ABAB.A.B...BBAAA.BABA.A...BBA...A..A..BBAAAAB...AB....A..BA.A.AAAABA.ABB.A..A..BBAAB....B...A.B.BA..B...A...BA.ABA.ABA..BBA.AAA..BBABA..B..B.AAAABAA.BBB.BA...BB.ABB..ABA....AB..AAB..AAA..AAAA.BAB.BAA.A.A.AAABABA.AB.A...A...A.B.A.A...B..A....BA..BAB.BAAAAB.AABAB.AAAABABBA.AA.BB.....AA.A...B..AB.B..ABBBA.BAAB.ABAB..B.B.BB..BB....B.ABA.AA..AA...A.B.AAA....BAAB.A..A..AAAB..A.BBAB...AAB..BAB..ABA.AA.A...B.B.....BBBAB..A.A.AA.....BB.AAA...BAABABAA.A.A..A.BAA.B..BA.BBABB..BB.BAAA.....BB.B...BAB.A.B.BA..B.B..B..AA...BB.AB.BA....AAA...A...BAAA..A.A.B..BAA..BB...BBBAB.A.AB.AAA.BBA.BBB.AB..B.B.B.AB....AB..A...A.AABB....BB..B...BBA.B.A.BA....BBABA..B.B.AB.....BBA...A...ABBA...AA.BBB.B.B.BB.A.BA...A..ABAA...AB.BA...A.BAAAA....BBBAA..AA.AA.A.A..AB..B.ABBAA.AB.ABBBA..ABB..BA..BA...ABA.A..A..BB..A..AB..B...BB...BAB..ABB..BA.AAB..AB.AABA.BB...ABA.B.B..BA.BB..B....BBBA..A....A..ABB.AAB..BBAAB...AB.AB.B.A......BB..B.AA.A..A...AAAA.A.BA.A..A..BB...B.AAB.AB.A...AB..B..A.A.BBA.AAB.A.AB...A..A...B...AABA....A.BB.B.BAA.BB..A.B..B.BBAA.A.A..BAAA.AA..ABAA.B..AB.AA...B.....A..BBB.....A.BABB.B.AB...BB.B.AB.A.AA.A.BBAB...BA.A.B.."

Returns: "BBABABABABAABAABBABAABBAAABAABABAABABBBABAABABABABABAABABBBABABAAAAABBABABAABAAABBABABABBABABAAAABAABBAABABABABAAABABABABABABAABAABAAABBAABBABBBBAABBAABABBABAAAABBBBABABABABAABAABABABABABAABAAAABABABABAABABAABABAABABAABAABBBBABBABAABBABAABABABBAABABABAABABABABBBBABBABAAAABAABAABBABAABABABAABABBBABABAAAAAABAABAAABABABAAABABABABAABBABABABBBBBABABABAABABAABABABAABBAAABAAABABABBBABAAABABAABBBABAABAABAABAABABABABABBAABAABAABBABAAAABABAABABABAABABAABABAABAABAAAABAABABABAAABABABBABABABABABBABAAABBBABAABABAAABABABABBAAABABABAABAABBBAAABABBABABABABAABBABABABABABABBAABBAAAAAABBAABABABABAABAABABAABABABABAABABABBBABAAABBBABABABAABAAABABABAABAAABAAABABABBABABABABABBBAABBABABABABAAABABABABABABAABABAABABBABABBBABAABABAABABAABAAABAABAABAABBABABAABBAABAABABAABABAAABAABAABAABAABABAABAAABABABAABAABABABAABAAABABBAABABAABABBABABAABABBBAABAAABABBABABAABAAABABAABABAAABABABAABABAAABAAABABAABAABABABBBABAAABABAAAABBABAABABAAABABAABBAAABBABAABAABAAABBAABABABABABAABABABAABAABBABABAABABAABAAABAAABBBBABABAABBAABBABABAAABBAABABAABBABAABAABABABABBABABABABAAABABAABABAAABBAABABAABAABBAAABABAABABABBABABABBABABABABBAABBAAABAABABABABAABAABABAAAAABAABAAABABABABABAAABAAAAABBABBAABAAAABAABBBAABABABBAABBABBABABABABBAABABBABBABABAAABAABABABABAABBBABBBBBABABABABAABBAABBBAAABABABABABAAABABAABABABABABABAABAABBBAAABAABBBABABAAAAAABAABABABBABABBAABABABAABAAABABAAABABAABABAAAABABAABABAAABABABBAAAABABABABAABBABABABAABABBAAAABABAABABABABABABABAAAABABABBAABAABABBAABABAABABAAABABABABABAABAABABABABABABABBABAAABABBABABABAABAAAAABAAABBBABABAABBAABBABABABABAABABAABABAAABAAAAAABABABAABABABAAABABABABAABABABABAABAABABAABABABABABABABABABAAAABAAABABAAAAABABBABAAABBABABAAABABAABABABABABABBBAABAABAABABAABABABBAABBABAABAABABAABAAABABAABAAAABABABAABAABAABAAAABABAABBABABAAABAABABABABABAABABAABABABABABBBABABABABAABABAABBAAAABAABAABABAABABABAAABAAABAABAABBABBAABBABAAABABAABBABABABABAAABABABABABAABABAABAABBAABABABABAAAABABABAABAAABAABAABAABAABABBABABBBABAABABAAAAABBAABBBAABAABABABAABABABABABABABABAABBABAABBAABABABBAABAAABABABABBABABABABAABABABABBABABABABABBABABAAABBBABABABBAAABABABABAABAABABABABABABAABAAAABABABBBAABAAABAABABABAABAABAABBAABABAABBBABAABBAABABABABABABABABAABABBABABAABAABABABBABABABABABBAABABAABABABAAABAABBABAABAABABAABAABBAABABAABBBABAABABAABAABBAAABAABBAABABAABAABABAABABABABBAABAAABABAABABAAAABAABABABAABABBABABAAABAABAABABABAABABABAABBABAABAABABABAABAABAABABAAABABABAAABBABABAAABBABAABAABABBAABABABABAAABAABAABAAABABABAAABAABABABAABABBBABABAAABABBABAABABABBABAABAABAABAABBABABABABAABAB"
2

"A...B.AB.AB.ABB.BB.B..BBBA.BB.A.AB..AA.A.BBAA.B.AA.....BA..B.AA..BAA...B.B.B...A.A.BAA...BA.AABB..........BBBA......AAAB.B.AA...BAAAAAA.....BAB..A..B..A..BB.B..BAA.BA..B.....BB....BAAABB.BB.BB...B....AB..B.BAA..B..AA.....ABBAB..A..BAB..B.A..AAAABBB....BBA..BBBA..B..B.AA...A..B..AA...BA...BB..B.AAA...BA...AAAB..A...A.A.AB..A..A.BBAA.BA.ABBBAA...AB.B.....B......AB....B.B..A.ABB..BA.B.BAA..BB.B..AAAA.B.ABB..B.AB.BB.AAB.....AB.A.ABAA.BA...BB.A..A.AB...B..A...AB.BB..BB.BAB.BB..A.AB.AA....BBBAAAB..A.A...A.B......B.AA.A.ABB..AAA..AB.B.A...BBAB..AABBB.BB....A.AB..BBBA...B.ABBAAAB.BB..B..AA...AB.A..A.BBBBA.AA.B.B.BBA...AA...A....A..A......B....BBA....B.AAB..B..A.B.AA....A......B..B..ABA.BBBB..ABA.A..AB.BB..A...BA.BBBAA....B.A.BB.B.A.A.A..A.B.A.AAA..A.B.A.B.BB....BBB.B..BA.BAB.B...AA...A..AAB.BA..A.A.B..B.A.B.A.BA..A..AAAAA.B...BA.BABBA..B.ABBB.B..BA...AB.B.BB.BB..BBA.A.A..B....AAAA..B.A..BA..AAAB..AAAB.A...ABA...BA.B.ABAAB...A..AB........B..ABAB.B.ABBB..BB.BA.AB...BAAA.A...BBABA..BB.B..AA.....B..A.A..A.BA...B..AA..ABABA.A..B..B..B.A..A.BBA...BBBBBAA.B..BAAAAB.A...BAB.AA...B.A.AB..B..B.....AAA...BBABB.BAA.BAA.BB.AABA.B..A.A.B.B...AA.BABA.B.....AAAA..A..BA..A.B......A.B..B..AABA.AAABA.A...A.BB..A..ABA...A..AAA..B...A.....A..B.B.AABA.AAA.B...BA.A.BA.BBAA..AABB...B.B.B.B.B.BAA.......B.BBA.AB........B.AA.B....B..B.BA....A.BAAA.A.B.A.A......AB.B.BABBA.A.BBAB..BA..AA..BA.BA.....B.A.BBB..AB.BAA...A.BBB.....BAB.....AABA...A.A..B.A.AAA.B.AB...BB.A...AB.A...BB.B.ABBA.....A.BB..B.AAB.A.A..A..A.AABAB.B.AB.B.A.ABABB.A....B..B..AB.A..BBA...BBB...B.BAAB..BA......BA..AB.BAA..ABA..B.A..ABB.B...B.B..A....A..BB.A....BB.......A......B.A.AA.A...B.BAA.A...B...B.BAA..A..BBB.BBA.BABBAB.BA....AABAA...B.ABBABB..BB...A..AABAAA.BBB..A..BB.B..A.AAB.B.A.AB.BBA.....B.A.A...A.B.....ABA.BB..ABAA....A..A.B.ABBBBBA..BB..B....BA.B.BBAABBB.BB..B.A.BB......A.BBB..BB......A.BA......A....AAA.BBAAA.B.B........AA.BA.ABBBAA.A.B.ABBAB.....BBABAAAB.BAA..B.A.....B......A.B..BA.....AA..BAB.B..AABB.A..AAB.BB...B..A.B..AAA.AAABB.A.A.A.A.B.....B..AB.B..A...BBA....ABA...B.AA.B.BB.BBBAA..ABA.A.BB.BB..AA...ABA.BBB.BA.B.B.B.BAB..B..A.ABBA.BAA.ABBAABABB.AB...BBB..ABABBBAA...B.B.BBABABB....AABA.A.A.A.A.AAB.BBAB.BA..B..A.BA.B.B...AAA.B....A..AABB...A.....A..A.B"

Returns: "ABAABAABAABAABBABBABAABBBAABBAABABABAABAABBAAABAAABABAABABABAAABABAABAABABABABAABAABAABAABABAABBABABABABAABBBABABABAAAABABAAABAABAAAAAABABAABABABABABABABABBABAABAAABABABABABABBABAABAAABBABBABBABABABABABAABABAABABABAABABABABBABABABABABAABAABAAAAABBBABAABBABABBBABABAABAAABABABABABAABAABABAABBAABAAAABAABABABAAABABABABABABABABABAAABBAAABABABBBAABABABABABABABABABABABABAABABABABABBAABAABABAABABBABABAAAAABAABBAABAABABBAAABABABAABAABABAAABABAABBAABAABABABABABABABABABBAABBABABABBABABABAAABABABBBAAABABABABABAABABABAABAAABABABBABAAABAABABAABAABBABABAABBBABBABABABABAABBBABAABAABBAAABABBAABABAABABABAABAAABBBBABAAABABABBABABAABABABABAABAABABABABABAABBABABABAAABAABABAABAAABABAABABABABAABABABAABBBBABABABABAABABBABABAABAABBBAABABABAAABBABAABABABAAABAABAAABAAABAAABABBABAABBBABAABAABABABABAAABABABAAABABABAABAABAABAAABAAABABAABAAAAAAABABABAABABBABABAABBBABAABABABABABABBABBAABBABABABABABABAAAABABAABABABAAAABABAAABAABABABABAABAABAABAABABAABAABABABABAABABABABABAABBBAABBABABABABABAAABABAABBABABABBABABAABABAABABABABAAABABAABABAABAABABABABABAABAABAABAAABBABAABBBBBAAABAABAAAABAABAABABAAABAABAABABAABAABABABAAAABAABBABBABAAABAAABBAAABAABABABAABABABAAAABABAABABABAAAAABAABABABAAABABABABAABAABABAABABAAABABABABAABBABABAABABABABAAAABABABAABABABABABABAAABABAAAABABABABAABAABBAABAAABBABABABABABABABAABABABAABABBABABABABABAABAAAABABAABAABABABABAAABAAABAABAABABABABAABABABABBABAABBABAABABAAABABAABABABAABAAABBBABABABAABABAABBBABABABABABABAAABABABABABABAABAAAABAABABABBAABABABAABAABBABAABBABABABAABBAABAAABAABABAABAABAABABABAABABAABABABBAABABABAABABABAABABBABAABBBABABABAABAABABABABABABAABABAABAABABABAABAABBABABABABABABABAABABBAABABABBABABABAABABABABAABAABABAABABAABABAABABABABAABAABABBBABBAABABBABABABABAAABAABAABAABBABBAABBABAABAAABAAAABBBABABABBABABABAABABAABABABBABABAABAABABABAABABABAABAABBABABAABABAABAAABAABBBBBABABBAABABAABAABABBAABBBABBAABAAABBABABABAABBBAABBABABABAABABABABAABABAAAAABBAAAABABABABABABAAABABABBBAABAABAABBABABABABBABAAABABAABABAABABAABABABABAABAABABABABAABABABABABAABBAABAAABABBABABABAABABAAABAAABBAABABABAABABABABABABABABABAABBABABAABABAABAAAABABBABBBAABAABABAABBABBABAABABABAABBBABAABABABABABAABABABABBAABAABABBAABABBAABABABBBABABABBBAABAABABABBABABBABABAABABABABABABAABABBABABABABABAABAABABABAAAAABABABABAAABBABAABABABABAAAB"
2

".ABAAA....................A.............AB....BB.......A...B........A......AAA...A....B.A....A....BB...B..BB........ABBB..BA.......A..AB........BB....A...AB...B...............B.....A...B...BB......B.A.........B...A...B.A..........B.A.....B....A.....AAA........B...A..B.B.A.....A.......BABB....B.....B.A.....A.....A....A..B.......B.B..B....B...AB....B.....A.B..........B...................B.A.......B......B......A.......AB....A.A................B.ABB......A.A....A.....A..A......A..........A.A..AB....B...B..A.B..........A.B.A..B...A......A..A..B..B......A........AB.......BAB....A..B....A...B....B....AA............A.....A...B..B.....ABA........B.AAA...........A.A...A.BB.B......A..BB.....A.....BBA..........AA.........B....A.B....B...B.B...AA....A........AAA..AB....B................B......B...........A.A.A........A.BAB....A.ABB......AB.............A.........A....B.A..A...........B..A.......A...B...B.A......B......A..................A.....B...........BAB...B....A..........B.B...........B.......B...B.....B.AA..AB..........B......B......A..ABAAA...B.A.B.A....A...A..........A.B.BA.....A.A.....A.AA.......A...B......B.A.A...A..BB.....A..B..B...B.B...B.....B....B.......B....B.A.A.....AABB...........A...B.........B.A..A....A..................B.A..A.......B..B.A...........B..BAB..A..A..B.A.....BA..A.......A...BB.A.B...A.....A.B......A.................B........B........AB.A...B..A.B..B......A......AA..B...B..B.....AA.....B..A......B..A...A.........B....AB..........A....B.B........A........BBA.A.A.B.....B..B..BB...............A.A.A....B....A.B.B..A.....B.....A.........A.....BA.A.A...........AA..AA.BA.BABBBA....B.....AA..A............B.A.B..A.BA....A.......B..B.B....B......B....A.A.B........AB.A...A..AAA.......B.A....B........A......B.............A........B..AA.A.A...BB............AA.....B....B..B...B.A....A..A..B...............B.A......B...B............B.A.B..A......A...B..BAB......B.A.......A.A.AA............AA....A.AA.......B..B.......A......B....AABA.B...A....B...A....A.............A......A..A........AA.......B.....AA...B...B......A............A...AA.........B..B.AB......"

Returns: "BABAAABABABABABABABABABABAABABABABABABABABABAABBABABABAABAABABABABABABABABAAAABABABABABAABABAABABABBABABAABBABABABABABBBAABABABABABABAABABABABAABBABABABABABABABABABABABABABABABABABAABAABABABBABABAABAABABABABAABABAABAABAABABABABABABAABABAABABABABABABAAABABABABABABAABABABAABABABABABABAABABBABAABABABABAABABABABABABABABAABABABABABABABAABABAABABAABABAABABABAAABABABABABAABABABABABABABABABABABAABABABAABABABAABABABABABABABABABABABABABABABABABABABABABAABBABABABABABABAABABABABAABABABAABABABABABAABABAABABAABABABABAABABABABABABAABAABABABAABABABAABAABABAABABABABABABABABAABABABABABABABABABABABABABAABABAABABABAABABABABABABAABABABABAABAABABABAABABABABABABAAAABABABABABABABABABAABBABABABABABABBABABAABABAABBABABABABABAAABABABABAABABABAABABAABABABABABAAABABAABABABABAAAABAABABAABABABABABABABABAABABABAABABABABABABAABABABABABABAAABABABABABABBABABABABABABABABABABAABABABABABABABABAABAABABABABABAABABABABABABABAABABABAABABABABABABABABABABABABABABABABAABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAAABAABABABABABAABABABAABABABABABAABAAABAABAAABAABABAABABABABABABABAAABABABABABABABABABABAABABABABABAABABABAABAABABABABABBABABAABABAABABABABABABABABABABAABABABABABABAABAABABABABAABBABABABABABAABAABABABABABABAABAABABAABABABABABABABABABABAABAABABABAABAABAABABABABABAABAABABABABAABABAABABAABABAABABABABABAABBAAABABAABABABAABABABABABABABABABABABABAABABABABAABABABABABABAABAABABAABAABABABABABABABAAABABABABAABABABAAABABAABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABBABABAABABABABAABAABBABABABABABABABAABABABABABABABAABABABABABAABABABAABABABABABABABAABABABABABABABABABAABAAAABAABABBBABABABABABAAABAABABABABABABABAAABABAABABABAABABABAABAABABABAABABABAABABABABAABABABABABABAABABABAAAABABABAABAABABABABABABABABABABABABABABABABABAABABABABABABAABABABAABBABABABABABABAABABAABABAABAABABABAABABAABAABABABABABABABABABABAABABABABABABABABABABABAABAAABABABABABAABAABAABABABABAABAABABABABABABAABABABABABABAAABABAABAABABABAABAABABABABAABABABABABABAABAABABAABABABABAABABAABABABABABABABABABABAABAABABABABAAABABABAABABABAAABAABABABABABABABABABABABABAABABAABABABABAABAABAABABABAB"
2

".ABAAA.BB.BB.ABBBBAA.AABAABB.BAA.BB.BABAAABAB.ABAAABBABABBBA.BABAB.B.BB.BA...BBBBBA.A.A.B..AB.AABABBBAB.....ABA.AABAA.A.BAB.ABABABA..BBB.BAAAA..BBBA.A...BBAA.BAAABBBB.BABBAABBBBAB..A.BB.A..AAA.AAABBB.B.AAA.AA.BB.BAB.AA.BAAA.AA.BBBBBAABBB.AABABABB.ABAABABB.A..BB.A.BBA.AB.ABAB.BBBABABAABAB.AABABBA.B.AAAABBBAABA.AA..ABBBAA.AA.ABBAB.BAA..A.BBBA.B...A.AB.AA.A.BAA.B.AB.BBA.BBA.BBB.ABB.BABB.ABBAAB.BB..ABBABABAB.BBA.A.AAA.B.BAB.BAA.A.ABBABBAA.B.BA.BB...B.BAA.AABBABAB..A.A...AA.B.A.A.BBA..AA..BB..AAAA.A.ABBBAB.AB..AABAAAAA.A.BABBBBBBBBA.BAAAA.BB..BA.A.AAABBBAB..A..BB.AB.BAA.BB.BBBBBBABAB..AA.BBAA...BB.B.A.A.BAABB...BAAABA.ABB.BAAAB.AAA.A.BABB.AAABA.BBA.A...BBBAAA.A.AB..B.BB.A..BBBBA...B..BB.BABBABABABBABBB.BAAB.A..AAA.AAAB.....BA..AA.BABAABBBBB.A.A..AAABB.AA.B...B.BAAA.ABBBBAA.ABBBA.BBBA..BABABB.A..ABABB.B.ABBAAABA.A..B.B.BAAB.BBBBBABB.BBAAA.BBABB.A.BBA.BBBAB.B.B..AABAAABBABABB.B.ABB..B.BB.BABBBBBABAA.AABAABAAABA.B.BBBA.BAAB.B..BABA...AAAABBA.AAAAAB.AA.ABB..B..BAABAB.AAAAABABA...B.AA.AB.....B.BAAAB.ABBABB.A.BBAB.ABBAAAABB.BB..B.BBAA.ABA..AAA...BAAAA.BB.AAA.B..AAB.BABBA.ABABAA.A.A.BAABBBBAAAAABBA.BAB.AB.B.BBB.AAB.B..AAABBA..A.B..B.BA.A.AAA.....A.BA.ABABBBB..A.AABAAA.B.AAABAAAA.B.B.AA.BBAABABAAAAAAA..AAA.AB..BA..A...A.ABBB.AA.B.B.A.A.AA....BA.BBAABBBBB.ABBAAAA..AAABA...AB.B..AB.A.BBA.BBBAABBBAAAB.B.A...B.BBBA.BBABABBABBBB.BAAB.A.BAABBB.AABABBB.BABAABA.ABBABABABAABBABA.B.ABAABA..BBA.BBBB.B.BAA.A.B...BBBAABBBBB..ABBABAAA.BAABABB.AB.AB.A.ABBB...BA..AAB.A..ABAB.AA.AABA.B..B..A.BA.ABABABBAAAA.AB.ABBAABBABABA.AAAAAA.BAABABBB.BBABAAAB..BAA.B.BB.AABA.ABAABA.ABAA..A..AAABAAB.AABABBA.BA.AABB.AABB..AB...BBA.BBB.BABAABAABAABA..A.BA.AAABABBBA.AAB.BBAAABBBAAABA.AAABBAAB.BA.ABBB.BAA.A.BABA.AA.BAABBABBAAA.AABA.A.A.AB.BABBBB.A.B.A.AAA.BAB...AAA.AA.BBBBAA..AB..ABABAAB....ABA.BAA.AA.BAAA.B.AB..BBAAA.AB.BBAAAB..A..BAB.BBA..BB..AA.ABABABAAABBBABAA..AA.B..AABAAAABABB.A...BB.BBAA...AAAABBBB.B..BAB.B.BAA.AAABBABBBBAAB.BAABABABA.BBAABAABBBAAA..BBAAAAA.BBAB.ABAAA.AAAA.ABABBABA...ABAABBBBABBBA.ABBAA.AAAAB.AA.A.BBBABAABB.BA.ABBBBBB..AA.ABAABB.AB..AAAAB.BBAAABBABBAABABB.AABBA..BBAABB.BABBBABABA.B.B.A.A."

Returns: "BABAAAABBABBAABBBBAABAABAABBABAAABBABABAAABABAABAAABBABABBBAABABABABABBABABAABBBBBABABAABABABAAABABBBABABABAABABAABAABAABABAABABABABABBBABAAAABABBBABABAABBAAABAAABBBBABABBAABBBBABABAABBAABAAAABAAABBBABAAAABAAABBABABAAAABAAABAAABBBBBAABBBAAABABABBAABAABABBAABABBAAABBABABAABABABBBABABAABABAAABABBAABAAAAABBBAABABAABAABBBAABAABABBABABAABAAABBBAABABAABABAAABAABAAABAABABBAABBAABBBAABBABABBAABBAABABBABABBABABABABBABABAAAABABABABAABABABBABBAAABABAABBABABABAABAABBABABABABABABAAABAABAABBABAAABABBABAAAABABABBBABAABABAABAAAAABAABABBBBBBBBAABAAAAABBAABABABAAABBBABABABABBAABABAAABBABBBBBBABABABAAABBAABAABBABAABAABAABBABABAAABABABBABAAABAAAABAABABBAAAABAABBABABAABBBAAABABABAABABBAABABBBBABAABAABBABABBABABABBABBBABAABAABAAAABAAABABABABABAAAABABAABBBBBAABABAAAABBAAAABABABABAAABABBBBAABABBBAABBBABABABABBAABAABABBABAABBAAABABABABABABAABABBBBBABBABBAAAABBABBAAABBAABBBABABABABAABAAABBABABBABAABBAABABBABABBBBBABAABAABAABAAABAABABBBAABAABABAABABABABAAAABBABAAAAABAAABABBAABAABAABABAAAAAABABABAABAAABABABABABABAAABAABBABBAAABBABAABBAAAABBABBAABABBAABABABAAAABAABAAAAABBAAAAABABAABABABBABABABAABABAABAABBBBAAAAABBAABABAABABABBBAAABABABAAABBABAAABAABABABABAAABABABAABABABABBBBABABAABAAAABAAAABAAAAABABAAAABBAABABAAAAAAABAAAABABAABABAABABABABBBAAAABABAABABAABABABAABBAABBBBBAABBAAAABAAAABABABABABABABAAABBAABBBAABBBAAABABAABAABABBBAABBABABBABBBBABAABAAABAABBBAAABABBBABABAABABABBABABABAABBABAABAABAABABABBAABBBBABABAABAABABABBBAABBBBBABABBABAAAABAABABBAABAABAABABBBABABABAAABAABAABABAAABAABAABAABABAABABABABABBAAAABABAABBAABBABABABAAAAAAABAABABBBABBABAAABAABAAABABBAAABABABAABABABAABAABAAAABAABAAABABBAABABAABBAAABBABABABABBAABBBABABAABAABAABABAAABABAAABABBBABAABABBAAABBBAAABABAAABBAABABABABBBABAABAABABABAAABAABBABBAAABAABABABABABABABBBBAAABAABAAAABABABAAAABAAABBBBAABAABABABABAABABABABAABAABAAABAAAABAABAABBAAABABABBAAABABABABABABBABABBABAABABABABAAABBBABAABAAAABABAABAAAABABBAABAABBABBAABABAAAABBBBABAABABABABAABAAABBABBBBAABABAABABABAABBAABAABBBAAABABBAAAAAABBABAABAAABAAAABABABBABABABABAABBBBABBBABABBAABAAAABAAABAABBBABAABBABABABBBBBBABAABABAABBAABABAAAABABBAAABBABBAABABBAAABBABABBAABBABABBBABABAABABAABAB"
2

"BAAA...BB.BB.B..A.B...A.AB...B.B..A..BB..AA...........BB..AA...B.......A..A.B.A....A..AA......AAA.BB.A..B...A.BB...AB.ABAAB.ABB...AB.A..B.A.A.ABBB.B.A.B....BB...BBB.B..AAB.A..A..A.B.A....BA...AB.AAA.ABAA...AABBB....AAB..BB..A...A.B....A.B.BB.B...AAB.A...ABBA..B...A...AAB...A..AA.A......A.BB.ABA..AA...B.A.A..AA...AA..AA.....BA.....ABBB..A.AB.B.ABA...A....BBBA.B..BAAA.A..B..BB.A...AA..A....BAB.AA.AAABB.A.AA......B..AA..B..BAA..AAA.AA.A.A....ABAB.AA..B....B.A....BB.B..A.B...B.A.BA...B.A..B..A...B..B...A.AA...A....B..ABB..A.......B...B.B...A.BB...........BA.AA.A......A..A.AAB.....ABA.AAA.BABAB.AA.B.A........BBA.ABB..A.A..BB.B...BABAA..B...B.A.B.B.B...B........BBBA.B.A.BAA...A.B..A.BA.BBBA.B..BAB..B..B.BB.BBAA.B...BBBA..AA...A.B...B..AA....A.AA.AA....AB..B.A..B..AA..A.......B.A.BBA.A...A..B.B.B...BABA.BBA.B....B....A.A..BB.B...AB.BAB......BBBAB..AB.B...B.A..AAA...AA...B.A.A.BA..AA.AAB..A....B.B.....AA.....A.BB..B.AABA.....B...B.BB.BBAB......BBB.A...BBAB.BB...B....AA..AA..A.BB.....A.B..A...BAAA...BB.....ABA.A......A..A....B.A.BABBBBAA.B.B.AA.B.....B..B..BB..AB.B..A.A...A.AA.A.AB.ABA...AA.BAABB.BA.A...A..A.A.A...B....BBB.B....B...B..A..ABA.ABB...BA.BAA....B...BBA...BA.AB.B....B.AA.BAABA.A..A...B...BA.A...A..B.AB..A.AAA...AAA.A..AB...AA.A.B....BBAB..A..B.ABBB.....A..BABBB....A.BB....AB...B.A.....B...AA.B..B..B....BA.A..BB..ABA..BABB....B.AAAABBB..ABABB.....BAAA......AB.....AA..B.A.B.AAAA.BA.BAABAB..B..B.AA..AB...BA.AAB.BBA...A....B..B.A.B.ABB.A..AAAB..AA.B....BBA...AA...ABBB..B..AB..AB..A...BB..AABA.B...AA.B......AB.....BAB..BAB.AAB.AA......A..B.ABAAB.A..........AA.A.A.A.AAA.....AAAA..........B.B.A.B..B..B..AAABBA.A.BB...B..A.BA...A.A.B.A...A....BBA..A...B.....AB.ABA.B..BA......B..AA.AAB.A............B......A.BAAB.B..AB...B.AB......B...B......BAB..B.B.BBB.B.BB.....B.ABB...B...A.AAAA.BB..B.....B.A...B.AAB.A....BBA....A.B..BAB.....B..B.A....AAA.AA.BB.BA.A....A..AB.A..A...A..A.A.....A.....A..AA...B..BB..A..AABBAA..B.B.BBA......ABA..BB....AA..B..B.ABA..B.A....AA..B.A.B.B......B...AA.A....A.BAAA.A..A......AB....B.A...AAB.B....A..AA...B.B..BA....ABA.AA......A.A.BA.AA....ABAB.BA...B.B.A..AAABAA..B..A......A..A.B..BA.........BA..B..B.....A..A.BBB....BB...AAB.A...BAB.B..AB..B.AB..A.A..A..AAA.A..B...AA.B.....AB......B.B.B..BA...BAB.A.BB...BB.B...ABAA..A.A.BAB....BB.....BB..BBB...BA.A.A.BB.B.B...B"

Returns: "BAAABAABBABBABABAABABAABABABABABABABABBABAABABABABABAABBABAABAABABABABAABAAABAABABAABAAABABABAAAAABBAABABABAAABBABAABAABAABAABBABAABAABABAABABABBBABAAABABAABBABABBBABABAABAABAABAAABAABABABABABABAAAABABAABABAABBBABABAABAABBABABABAABABABAABABBABABAAABAABABABBABABABAABABAABABAABAAABABABABAAABBAABABAAABAABAABABAAABABAABAAABABAABABABABABBBABABABABAABABABABABABBBAABAABAAABABABAABBAABABAABAABABABABAAABAAABBAABAABABABABABAABABAABAABAAAABAABABABABAABABAAABABABAABAABABABBABABAABABABAAABABAABAABABABABAABAABABAABAABABABABABABABBABABABABAABABABABABAAABBABABABABABABABAABABABABAABAABAABABABAABABAAAABABABAAAABAABABABABABBABABBABABABABBABABABABAABABABABAAABABABABABABABABAABBBAABAAABAABABAABABAABAABBBAABAABABAABAABABBABBAAABABABBBABAAABABAABABABABAABABAABAABAABABAABAABAABABABAABAABABABAABAAABBABABABABABABABABABABAABBAABABAABABABABABABBABABAABABABABABAABBBABABABABABABAABAAAABABAABAABAABAABABAAABAABABABABABABABABAAABABABAABBAABAAABABABAABABABABBABBABABABAABBBAABAABBABABBABABABABAABAAABAAABBABABAAABABABAABAAABAABBABABAABABABABABAABAABABABAAABABBBBAAABABAAAABABABABAABAABBABABABABABABABABAABABABAABABABAAABAABBABABABABABAABABABAABABAABBBABABAABABABABABAABABABBABABAABAABABABABABBABAABABABABABAABAAAABAABABABAABAABABABABABABABABAABABABAAABABAAABABAABABAAABAABABAABBABABABABAABBBABABAABABABBBABABAABBABABABABABAABABAABABAAAABAABAABABAABABABABBABABABABABBABAABAAAAABBBABABABBABABABAAABABABAABABABAAABABAAABAAAAAABAABAABABAABAABAAABAABABABABAABABBABABABABABAABAAABAABBAABAAAABABAAABABAABBABABAABABABBBAABABABABABABABAABBABAABAABABAAAABABABABABABABABABAABABAAABAAABABABAABABAABAABAABABABABABAAABABABABAAABABABAAAABABABABABABABAAABAABAABABAAABBABAABBABABABAABABABABAABAABABABABABBABAABAABABABAABAABAABAABABABABABABAABAABAABABABABABABABABABABAABAABABABABABABAABABABAABABABABABAABABAABABABBBABABBABABABAABBABABABAABAAAAABBAABABABABAABAABAAABAABABABBABABAAABAABABABABABAABAABABAAAABAAABBABABABABAABAABAABAABABABAABABABABABABABABAAABAABAABBABABAAABBAABABABABBABABABAABABABBABABAABABAABAABABABAABABAAABABAAABABABABAABABAAABABABAAABAAABABAABABABAABABAABAABABAABABABABABAAABAABABAABABABAABABAABABABAABAABABAABABAABABABABAABABAABAAAABAABABABABABABAABAAABAABABABABABAABABABAABABABAABAAABBBABAABBABAAABAABAABABABABABAABAABABABABAABAAAABABABABAAAABABABAABABABAABABABAABABAABABAAABBABABBABABAABAABAABAABABABAABBABABABBAABBBABABABABAABBABABABAB"
2

".A..B.BBAB.BBBBB.ABBABBB.BBB.BBB.BAB..BBAB..BA.AA..BA.B.BBBA..A.A..B..ABB..BBA.AAB..B.....BBAABBBBBBA.BBA.AAA.A.AAB.A..B.A.B.BAABB.BA...ABA...A..B.A....BAABABAAB...AA.BA.AAA.BABA.A.A.AB....A.ABA.BBA...ABBBAAABAABA..B.A.BBB..AB.AB..B.AAA.B.A..AA....A.A..A.BAA.A.A..A.AB..ABB.B.A..B.BBA....B..A....B..B.A..BA..BBB..B.A...AB...BA..BA.BAAABABA..A.A.AAB..ABBAAB.B..BA..BA.BBA.A..A.B...BBB.ABABA.A.ABAA...B..AB..AAAB.AAA.BB.AA.BBAA..BA.A...B.....A..B.A....BA.B..BBB...BBA.A.A.B.A..B.B.B.AAB.ABB.A...A.BBB.AB.BAA.A...BBBBAA.BABB...BBB.BA.ABBBBAA...BB.AA.A..AAA.A.AABABA.AAB....A.A.B.BB..A.BABB.B.AB.BA..AA.BAB..AAAAAB.B...ABBBBAA..B.A...B.A.AB..A..A.A.....BA..BA..ABAABA.ABBA..BBA.AB.BBABA..AB.BA..B.AAABB.B.AAA.AB.AA.BA..AAA...AB..ABA..B.BA..AAA.AA.B..ABBAB.A.A.A.A..AA.B...ABB.AABAA....AAAAB.ABB.B.AAB.A.B...ABB.AAB...BBB.A.A..B.BBABB.A.BBAA.....ABBAAAABBA.BA.BB..BB.ABAA.B.A.BB.AB.ABBA...AAAA.AB...BBBAB..A........BB.ABABAAA.BA.A.BAB...AB...BABBBA....B.BBBA..BB...A..BBB.BA....AABAAB...BBAA.A.AABABBB.BBA.BBBAAB.B.A.AB.BB.B.BB......A.BAA.AAB.BAABBBB..B.ABBAAA.A.BBAB.A...A..BA..B..AB.ABAABBA.AAAA.AABAA.AB.A..A.BB....A..A.BB.BABB.BBBB.BA.ABBBBBA.AABA.A.AB..BA.B.BA..B...B..BBAB.BAAB.A.AA.BABBAA.B.ABB.B.AAB.BAB.BA.B.BA.BAAABAAABABAB.A.ABA.ABA.A.AAA.BA.BAAB.AB..AAB.BA...B....BAAB.BAABB.B.A.A.ABBB.BBA.B..AAAA.BA.BAA..BBB.AAAAA..BBBB.AA.A..BB.AB.A..A.AAB.ABA...B.B.BBBAA.B.BA....B.AB.A..AAA..AB.A.A.BBBAAB..B..BB.ABAB.BBB..AAAB..AAB....ABBBAAB..BA....BABB....BABBAAB...A..A.A.AABA.AB...B.ABBA....BAAA.B..B..A.BAA..A.BB.BBB..AA.A.BB...AABB...BAAB...B..BAA.AAAB..B....BA.A...B.BA..B.BAB..ABAAB.BBA.ABB.B...BA.BABBBBBBA.B...AAB..A.A.BBBA..AA.BAB.BAA.BAB.ABA..AB.AA.B.A...A...A..BA...A..B.BBB.A.A..A.BBB.AAB.A..ABBA...A..B.ABB.AABBAAA.B.BAAA.AAB...BAB..AA.BB.BB.AB.BA.BB..AB.AABBA..AA.B.B...B.B....B...AAAABAAB..B..AA.ABB.A..A.....AA..B.A.BBA..B.AB..AAA..AABBB.A.AAAAAABABAB.BBBB.A..BB..ABAAB.BA..ABABB..AABB.....A..BB.AABAB....B.BB..AAAA..BB..AABA..BBBB.B...AB.B..BA.A..AABA....BBAB.BBBA.A...BA..B..BAB.ABAB..A...BABAB.B..A.BB.B.BABB.A...B.A.B.A.BA..AB.B.B.AA.BB..B.......A..A..AAA.A.AA.ABAA.B.AAA..ABB..BAA.AB.AAAABBAA..B..B.BA.A....AAB..B.A...BBAB.AAB.B.AAA.B.A.BAA.B.BBB....BABAABB...AB.BAB..B.BAABB.AA.......A...BA.B....BAABB.A...A.BAAB...BBAAB.AABB.BAB...AB.AAA"

Returns: "BABABABBABABBBBBAABBABBBABBBABBBABABAABBABAABABAABABAABABBBABAABABABABABBAABBABAABAABABABABBAABBBBBBAABBABAAABABAABAABABAAABABAABBABABABABABABABABAABABABAABABAABABAAAABABAAAABABABABABABABABABABAABBABABABBBAAABAABABABAAABBBABABAABAABAAAAABAABAAABABAABABAAABAABABABAABABABABBABAABABABBABABABABABABABAABAABABABABBBAABAABABABABABABABAABAAABABABAABABAABABABBAABABAABABABAABBABABAAABABABBBAABABABABABAABAABABABABAAABAAAAABBAAAABBAABABABABAABABABAABABAABABABAABAABBBABABBABABAABAABABABABAAABAABBAABABAABBBAABABAABABAABBBBAAABABBABABBBABABABBBBAABAABBAAABABAAAABABAABABABAABABABABAABABBABAABABBABAABABABAAAABABABAAAAABABABAABBBBAABABAABAABAABABABABAABABABAABABABABAABAABABABBABABBABABABBABABAABABABABAAAABBABAAAABABAAAABABAAAABABABABABABABABABAAAABAAABABABBABAABABABABAAAABABAABBAAABAABABAAAAABAABBABAAABAAABABAABBAAABABABBBAABABABABBABBAAABBAABABABABBAAAABBAABAABBAABBAABAAABAAABBAABAABBABABAAAABABABABBBABABABABABABABBAABABAAAABABAABABABAABABABABBBABABABABBBABABBABAABABBBABABABAAABAABABABBAABABAABABBBABBAABBBAABABAABABABBABABBABABABAABAABAABABAABBBBAABAABBAAABAABBABAABABABABABABABABAABAABBABAAAABAABAABABAABAAABBABABABAAABBABABBABBBBABABABBBBBABAABABABABAABAABABABABABABAABBABABAABAABAAABABBAAABAABBABAAABABABABAABABAABAAABAAABABABAABABABABABABAAAABAABAABAABABAABABABAABABAABAABABAABBABAABABABBBABBAABABAAAAABAABAABABBBAAAAAABABBBBAAABABABBAABAABAABAABAABABAABABABBBAAABABABABABAABAABAAAABAABAABAABBBAABAABAABBAABABABBBABAAABABAABABABABBBAABAABABABABABBABAABABBAABABAABAABABAABABABABABAABBABABABAAAABAABABAABAABAAABBABBBABAABAABBABAAABBABABAABABABAABAABAAABAABABAABABABAABABABABABABABABAABABBABABBABABABAABABBBBBBAABABAAABABABAABBBABAAAABABABAAABABAABABAABAAAABAABABABABABABABABABABABBBAABABAAABBBAAABAABAABBABABABABAABBAAABBAAAABABAAABAABABABABABAAABBABBAABABAABBABABAAABBABAAAABABABABABABAABABAAAAABAABAABABAABABBAABAABABABAABABAAABBABABAABABAAABAAABBBAABAAAAAABABABABBBBAABABBABABAABABABAABABBABAABBABABAABABBAAABABABAABABBABAAAABABBABAABABABBBBABABAABABAABABABAAABABABABBABABBBABABAABABABAABABAABABABABAABABABABABAABBABABABBAABAABAAABAAABABAABABABAAAABBAABABABABAABAABAAAABABAABABAAABAAAABAABBAABAABABAAAAABBAABABAABABABABABAAABAABAABAABBABAAABABAAAAABAAABAAABABBBABAABABAABBABAABABABAABABAABBAAABABABABABAABAABABAABAABBAABABAABAABABABBAABAAABBABABABAABAAAA"
2

"AB.BABB.A.A.AABBBBAABBABBBB..AAAABBBBAA..BBBBB.BABAAAB.ABAAAA.ABBBAB.BAB.AAABAAAAABBABABB.BBA.BBBB.ABB.B.BBBA.BABAAAB.BBABBABBBABAAAAAABBBAB.BABBAAAA..AA.BBBAA.B.ABBBBA.BA.ABA.BAAAABA..BABBBA...AAAAABBABBAABBAABA.AA..BAB.B..A.BBABBAABAAB.AB.BAABAAAA.BB.A.BB.BAAB.B.BABBABAAAABA..AAABABA.BABA.AABAABAAAAB.A.B.A.B.AB.A.BA..BBAAAABBB.ABBB..ABB.AB.AAB..BA.AAABAABBABAAABBBBAABBABBABBABB.BABAAAA...BBAB.BBABABABBB....BABBBBBB.A..ABAAAAA.BBBB.ABAABBAB.BBB..BAABAAAABABA..AAAABBBBBB.BB.AB.BABABBBAAAB.B..A.BAAAA.AA.BAAAA.BAA..AABAAB.ABBAB.ABBBAAB.ABBABBA.BAA.ABBAAA.BBBBBBB.A.AAA..BAABBB.BB..A.BA.A.A..A.ABBBAB..A.B.ABABABBBBABAAB.B.ABABA.A...B.AAAB...AAAAAABBBAA...ABABA.A.AA..BABBABAAAAA.AA.ABAABAB.ABBAB.ABBA..BA.A.AABAABBBBBA.BABAB.BAB.BA.BBB.A.A.ABB.ABABAAABBA.BB..AAAAABAA.AABA.B.BAAB.ABBA.A.ABBBAA.BBBBAAAABAB..BB.BB.AA.A.A..BBBAA..A.BBABB.BB.ABABB.AA.B.BBAAB..AABB.BBA.A..ABBAB..BBBBA..ABAAABBAABBAB.BBAAAA.BBB..AB..A.AAB.BBBBBBAAABBBBA.ABA.B...BBBAB.ABAAA.BBA.BBAABABBBA.B.BBAB.ABBB.B.AABBAAB.BAABA..ABB.BBBBB..BBBBBBA.ABA.BBBAB..AABBAABBBB.BB.AA.BBAABBABAAAB.BA.ABAAB.AB.BBAAA.AAB.BBAAABAABBABABBBBAAABBAAB..AABB.AABABBAA..A.AAABAABB..BAAAABBB.A...BAA..BABB.BBBBB.B.AAA.ABBBBAABAAAABAABB.BAAA.B.AA.ABAB.ABBA..BBA.AA..BBAABBBBBA.B.BBBABAB.A.B.BBBB.BB..ABABB..ABBBAAAAA.ABA.ABBBA..BA.BA.BA.A..ABAABBBA...BB..BABBA..BABB.ABBBAA.BABB.ABAAABB.B.AAB.BABB.BABABAABA.BA.AB.AB.ABBA.B.AABBBAB.AA.ABBBBBABABBBAABA.A.AAAB.BAAA.BBA.AABABAA..ABABAAB...AB.BA..B.B.BAABBB.AAABBBABB.BABB.AB.BA.BA..BB..BBA.AB.A..A.BBAB.BA.A.BABBABAAABAABBAAAABBA.BBBBAABABBBB.AA..B.AAB..AAABAB...BA...B.B..AAABABABAAAA....A.BA.B..BBABA.B....A..BA.BBBAB..BAABBBAAAAB..B..BABBA.BB.B.BB..BBA..AB.B.B.BABBA.AA.BBAA.AAAABABA.AAB..AABAA...B.BA.A...ABBA.BAAABBA..ABB...ABBBBAA.BBAAABAA.AABBABBAAB..B..B.AAAB..BBBBAAAABBAB..ABABABAB..BB.ABAABBAAAA.AAAB.AA..AAAAAABAABAB..AA.BBBABB.AA.AB.AAAAA.BBBB.BABA..BAAB.AAABBBBABB.AABABA.AAB.ABAB.BBBBAAA.A.A..A..A.AAABBAABABBAABBAB.ABAABBA..AB.AA.A.B..B.AAA.B.AA.AAABABAABABAB.ABAA.BAABBBBBABBBABBBBAAAAAAB.ABAA.AA.BBA.BBABBAB.ABB.AAA.BBAB...BBAABB.AB..A..AABABB.BAAAB.ABBBA.BAAAABBABBBABBAAAAAABAAB.ABBBBAA...AB.BABB.AABB.AAAA.B.A.B.B..ABAA.AAABBAA.BA...AA.BBB.BAAAAB..AB.ABBBA.ABB.AAB.A.A..BAB.BBABA.A.AABAAAA.A.ABAB..A.A.BAB..BB.BBBB..A.B.BAAAB.BBB.BBBBBBA.ABB.ABAABABABBA.A.....AAB.BABB.AAB.AABBAAAABBB.BA..AAAB.B.BABAA.BBB.AB..ABBBBBB.AABBAB.ABBBA.ABAAAB.B.A..A.BB.BBABAABAABBAAABA.AA..BBA.BBABAAABAAA.BAAAAABA.AABA.B.BA.BABB.AB.A.BBB.AABBABAA.BABA.B."

Returns: "ABABABBAABABAABBBBAABBABBBBABAAAABBBBAABABBBBBABABAAABAABAAAABABBBABABABAAAABAAAAABBABABBABBAABBBBAABBABABBBAABABAAABABBABBABBBABAAAAAABBBABABABBAAAABAAAABBBAAABAABBBBAABABABAABAAAABABABABBBABABAAAAABBABBAABBAABABAABABABABABAABBABBAABAABAABABAABAAAAABBAAABBABAABABABABBABAAAABABAAAABABAABABABAABAABAAAABAAABAAABAABAAABABABBAAAABBBAABBBABABBAABAAABAABABAAABAABBABAAABBBBAABBABBABBABBABABAAAABAABBABABBABABABBBABAABABBBBBBAABAABAAAAAABBBBAABAABBABABBBAABAABAAAABABABAAAAABBBBBBABBAABABABABBBAAABABABAABAAAABAAABAAAAABAABAAABAABAABBABAABBBAABAABBABBAABAABABBAAAABBBBBBBAABAAABABAABBBABBABAABABABABAABABBBABABAABAABABABBBBABAABABAABABABABAABAAAABABAAAAAAABBBAABABABABABABAABABABBABAAAAABAABABAABABAABBABAABBABABABABAABAABBBBBAABABABABABABAABBBAABABABBAABABAAABBAABBABAAAAABAABAABAABABAABAABBABABABBBAAABBBBAAAABABAABBABBAAABABABABBBAABAAABBABBABBAABABBAAAABABBAABABAABBABBABABAABBABAABBBBABAABAAABBAABBABABBAAAAABBBABABABABAABABBBBBBAAABBBBABABAABABABBBABAABAAAABBAABBAABABBBAABABBABAABBBABAAABBAABABAABABAABBABBBBBAABBBBBBABABAABBBABABAABBAABBBBABBAAAABBAABBABAAABABABABAABAABABBAAABAABABBAAABAABBABABBBBAAABBAABABAABBAAABABBAABAABAAABAABBAABAAAABBBAABAABAABABABBABBBBBABAAAABABBBBAABAAAABAABBABAAAABAAABABABAABBABABBABAABABBAABBBBBAABABBBABABAAABABBBBABBABABABBABABBBAAAAABABABABBBABABAABAABABABAABAABBBABAABBAABABBABABABBAABBBAAABABBAABAAABBABAAABABABBABABABAABAABABABAABAABBAABAAABBBABAAABABBBBBABABBBAABABABAAABABAAAABBABAABABAABAABABAABABAABABABABABABAABBBAAAABBBABBABABBAABABAABABABBAABBABABAABAAABBABABABAABABBABAAABAABBAAAABBAABBBBAABABBBBAAABABAAABABAAABABABABABAABABABAAABABABAAAABABAAABAABAABBABAABABABABABAABBBABAABAABBBAAAABAABAABABBAABBABABBAABBABAABABABABABBABAAABBAABAAAABABABAABABAABAABAABABABABABABBAABAAABBABAABBABAABBBBAAABBAAABAABAABBABBAABAABAABAAAABAABBBBAAAABBABABABABABABAABBAABAABBAAAABAAABAAABAAAAAAABAABABABAAABBBABBAAABABAAAAAAABBBBABABABABAABAAAABBBBABBAAABABABAABAABABABBBBAAABABABAABAABAAABBAABABBAABBABAABAABBABAABAAABAABAABAAAAABAAABAAABABAABABABAABAAABAABBBBBABBBABBBBAAAAAABAABAABAAABBAABBABBABAABBAAAAABBABABABBAABBAABABABAAABABBABAAABAABBBAABAAAABBABBBABBAAAAAABAABAABBBBAABABABABABBAAABBAAAAAABAAABABABABAABAAABBAAABABABAAABBBABAAAABABABAABBBABABBAAABAABABABABABBABABABAABAAAABABABABABABAABABAABBABBBBABAABABAAABABBBABBBBBBABABBAABAABABABBABABABABAABABABBAAABAAABBAAAABBBABABAAAABABABABAAABBBAABABABBBBBBAAABBABAABBBABABAAABABAABAAABBABBABAABAABBAAABABAABABBAABBABAAABAAAABAAAAABABAABAABABAABABBAABAAABBBAAABBABAAABABAABA"
2

"BB..AB.BBABABABAA.BAABBBAAAAB.B.AAAAABBBBB.ABABBBAAB.A.AAABABAABAB.AABAAABBBB..AABAABAAA.BABBABBAABABBBAAAAAAABABAAABA.BBAABAAABABAAABBBABAAA.BABAABBAAABABBB.BAA.A.AABBBAAAABA.ABA.A.AABAAABABABBBA.ABABAABBBAABAABA.ABBBAAAAAAB.ABBABBABAAABAA.AAAABBAAABBBBABBA.BBAABAABBABABAAAB.AAAAABAABABBBABABB.BAAAABA.AABBBBAB.AAABAAAA.ABABABBBABBABBA.BAA.AABBAABBA.ABAAA.BBA.AAABBA.AAAABBAABB.ABBBBBABBAABAB.ABBBBBBABABBBABA.BBBBBBABABBBABABB.BAAA.BAB.BBBAABABAAA.BBBB.AA.BBABB.BB.AAABBAABAAABBBBBBBAAABBABBA.A.AAABABAA.B.AAAABBABBBBBBABBBAABAABABBB.BABBBBAA.AABBBBBBBABBB.BABBBBAAAAAAABAAABBABABBAB.AAABA.AB.BBAABBAB.BBBAAAABAAABBBA.AB..AA.BBABAAABAAB.BAA.BBAABABBABA.BBBBAAB.BBBBBBB.A.A.BABABBAAAAABAAAAAAAABAAABBABBAAABBABBABAAABABB.ABA.AABBABAAABAAABBBB.AA.AABAABBAAABABAABAABABABBBBBBBBBABABABBAA.BAA..BB.AABBBB.BAAABA.BBB.BABABABBBABAAAAAAABBAAABABBAAAAABBBAAA.BABABBAABBBBBB.ABBBAB.BA.BBAABABABAA.BAABAAABAABBB.B.AAA.BBABBBABABBBBABBBB..ABBBA.BABA.B.ABBAAABBBB.AABABABBBBBABA.BBABAABBA.ABBAAAAABAA.ABABAAABBBABBAAB.ABA.BAAABBABBABBAB.BBABB.AABAABBBB.BABBAABBBABBAA.BAAAAABAABABAAABABBABBBBBABABABABBAABABAAAAB.ABAA..ABBBBABABAABBBABBAABB..AB.ABAAAAA.BABABBBAAAABABBAAABABBBBABB.A.ABAB.BBAAABBBBABBA.ABA.BABBAAAABBA.BAAA.B.AA.BA.AB.AABAABBAAB.BBB.ABABBBAABABBBABBBBAA.BBABBB.AAAAABBAAB.BBBAAAA.ABBABABBAABAABBAAABB.BAB.BBBA.BAA.BBABABBABBABABAABBBABABAAABABBBAABA.B..BA..ABBBBA.BBABBAABBBAAABBBAABAAAAABBAAAABABABBBBABB.AAAAABABBBBBBBBABAA.ABAAABBABBABA...ABABAABABAA.BABBABABBBBA.AAABABAABA.BBAABBAABAAA.AABAAAAAABAA..AAAA.AAAABAAAABA..BBAAAAAAAAABABABBABBBBAAAB.AAAABABABBAA.ABABAABBBBABBABBBABBABBAABBAABBABBBBBAABABBAAAA.BAAABAAABBAAA.BAAABBABBBABAB.ABBABBBBBBBBBAABAAABBABAABBAABABBBAAABA.BAA..BABAA.B.BAA.AABA.ABBBAAAAABAAAABBABBAB.BBAB.BABABABA.BABABAA.BABABABA.AB.ABAABAB.ABAA.BBAAAA.AABABBABBBBBABBAB.AAB.B..ABBABBA.BB.AABBAABBBBABAABAAABAAA.ABBBBAAAABBBAABBABB.ABBAABABBBBABAAABBAABAAAAABAABABABBAAAB..AAB.ABAABABA.BB.BAABAA.BABBBBB.ABAAA.A.BBABB.AAAAAAA.BAABAB..BAABBAABABAAAAAB.BA.BAABBABB..ABABAABABBAAA.BBAAB.AAAABABAABAABBABAAAA.ABBBABBBBAABABBBBABABBB.BBBA.AABB.AABBBAAABABBBBAABAABBBBABB.BABBB..BABB.BAAABBAA.AAABAAAA.ABB.BBBABAABBBBBBA.AAAAABBA.BBABABAA.AABAAB.BAAAB.BABBBAA.BAAAABBBBBAABAAAA.BABABAABBABBBAAAAAAABBBBABBBAAABAB.BABAAAABABA.ABABABABBAA.BBAAAAAAA.BBABAABBABBBBABBABB.BBBAB.AABBA..AAAABBBBABAABBBABAAAAABBABABAABAAABABAAABAABAABAABBBAAB.AABAB.BBBABBABAABBBBBABBBBB..BAAA.AAABB...B.A.BAAABBA.BBBB.AABBAAABAABBAAB.BABBAB.BBABAA.ABABBABABAA.ABBAAB.BABABBABABABBABABA.BBAAB"

Returns: "BBABABABBABABABAAABAABBBAAAABABAAAAAABBBBBAABABBBAABAABAAABABAABABAAABAAABBBBABAABAABAAAABABBABBAABABBBAAAAAAABABAAABAABBAABAAABABAAABBBABAAAABABAABBAAABABBBABAABABAABBBAAAABABABABABAABAAABABABBBABABABAABBBAABAABABABBBAAAAAABAABBABBABAAABAABAAAABBAAABBBBABBAABBAABAABBABABAAABAAAAAABAABABBBABABBABAAAABABAABBBBABAAAABAAAABABABABBBABBABBAABAABAABBAABBABABAAAABBABAAABBABAAAABBAABBAABBBBBABBAABABAABBBBBBABABBBABAABBBBBBABABBBABABBABAAAABABABBBAABABAAAABBBBAAAABBABBABBAAAABBAABAAABBBBBBBAAABBABBABABAAABABAAABAAAAABBABBBBBBABBBAABAABABBBABABBBBAABAABBBBBBBABBBABABBBBAAAAAAABAAABBABABBABAAAABABABABBAABBABABBBAAAABAAABBBABABABAAABBABAAABAABABAAABBAABABBABAABBBBAABABBBBBBBAABAABABABBAAAAABAAAAAAAABAAABBABBAAABBABBABAAABABBAABABAABBABAAABAAABBBBAAABAABAABBAAABABAABAABABABBBBBBBBBABABABBAAABAABABBAAABBBBABAAABAABBBABABABABBBABAAAAAAABBAAABABBAAAAABBBAAAABABABBAABBBBBBAABBBABABAABBAABABABAAABAABAAABAABBBABAAAAABBABBBABABBBBABBBBABABBBAABABAABAABBAAABBBBAAABABABBBBBABAABBABAABBABABBAAAAABAABABABAAABBBABBAABAABAABAAABBABBABBABABBABBAAABAABBBBABABBAABBBABBAAABAAAAABAABABAAABABBABBBBBABABABABBAABABAAAABAABAABAABBBBABABAABBBABBAABBABABAABAAAAAABABABBBAAAABABBAAABABBBBABBAABABABABBAAABBBBABBABABAABABBAAAABBAABAAAABAAAABABABAAABAABBAABABBBAABABBBAABABBBABBBBAAABBABBBAAAAAABBAABABBBAAAABABBABABBAABAABBAAABBABABABBBAABAAABBABABBABBABABAABBBABABAAABABBBAABAABAABABAABBBBAABBABBAABBBAAABBBAABAAAAABBAAAABABABBBBABBAAAAAABABBBBBBBBABAABABAAABBABBABABABABABAABABAAABABBABABBBBABAAABABAABAABBAABBAABAAABAABAAAAAABAABAAAAABAAAABAAAABABABBAAAAAAAAABABABBABBBBAAABAAAAABABABBAABABABAABBBBABBABBBABBABBAABBAABBABBBBBAABABBAAAAABAAABAAABBAAAABAAABBABBBABABAABBABBBBBBBBBAABAAABBABAABBAABABBBAAABAABAABABABAAABABAABAABABABBBAAAAABAAAABBABBABABBABABABABABAABABABAAABABABABABABAABAABABAABAAABBAAAABAABABBABBBBBABBABAAABABABABBABBAABBAAABBAABBBBABAABAAABAAABABBBBAAAABBBAABBABBAABBAABABBBBABAAABBAABAAAAABAABABABBAAABABAABAABAABABAABBABAABAAABABBBBBAABAAABAABBABBAAAAAAAAABAABABAABAABBAABABAAAAABABAABAABBABBABABABAABABBAAAABBAABAAAAABABAABAABBABAAAABABBBABBBBAABABBBBABABBBABBBABAABBAAABBBAAABABBBBAABAABBBBABBABABBBAABABBABAAABBAABAAABAAAABABBABBBABAABBBBBBABAAAAABBAABBABABAABAABAABABAAABABABBBAAABAAAABBBBBAABAAAAABABABAABBABBBAAAAAAABBBBABBBAAABABABABAAAABABABABABABABBAAABBAAAAAAAABBABAABBABBBBABBABBABBBABAAABBABAAAAABBBBABAABBBABAAAAABBABABAABAAABABAAABAABAABAABBBAABAAABABABBBABBABAABBBBBABBBBBAABAAABAAABBABABAAABAAABBAABBBBAAABBAAABAABBAABABABBABABBABAABABABBABABAABABBAABABABABBABABABBABABAABBAAB"
2

"BAA..A...ABAAA...AAABB..BBABBB....A....BA.BAA..A.A..AB.A.A.AB.AB..AAAB..ABA.BBAAB.A..B.A.BA.BB.A.A..BABB.A.BAA..BAA.ABBAAA.BBAAAA....AAAAA..A.A.BABAAB..B.B.A...BA.AABBBABB.BA..AABA.AAB.A.A.B..A.AA.BB.AA.AB.BAAB.A..B..A..BBAA.A....BA.B.BABA..BAAA...BB.BAAA.B.BBBABB.A..A.B.B..BABA..BBBB..BB..ABABB....B.BBBAB......ABBB.B.....B...BB.B.ABBB...B.BB...BA...BAB.BA.A..BB.A.BBA..B..BABAB.AA..B.ABAA..ABBBBBBAB..B.ABBA.B.A.AB.BBABB..BB.A.B..A.BBA.BB.B...AAB...BAB..B.AA..BA.BBB.A..AB.AA.B..AA.B..AB..AAA.BA.BABA...BBAB.A...ABBABA.BA..BB.AB.BAABA.A.AB.ABB..AA.AB...B.BAA.ABB.BB..B.B..BB.A.B.BAB.BAA.B.BA...AAAA......AB.AA.BAA.B..AAA.....A.ABBB..AB...B.BBB.AA..AABABB....ABB.BA.B.....BB..BA.BA..BBBBAAA.A...B.B.AB.A.BAB.B.B..B.AA..A.AA.B....A.B..BAABB.....A..BBBAAABBA.ABB.BBBBBA..BBBBB.A..A.AA.AAB..A.AABB.BBAA..A.BAAA..A...A...B.B..BBB.A.AAABBABAA.B.A.AA...B.AAAAA.ABA.ABB.B..BA.B.A.AA....B..B.AA.ABA....B.B.A..A..BBBB..A.B.A.AB...BBA.AB..BBA..A..ABB.AABAB.B.AAA.AA..BB.A.B..AB..AB.B.B...ABAA...BA.BB..A.A...AB.AA.ABB.ABABB....A.B.BB.A.AA..ABBA...A...A...BAA..A...BBBAB..A.A.....B...AB.B....A.AA.B....A....A..BABBB..A..A...A...AAAB....B.A..B..BAAA..A.BAABAA.BAB.AB.AAB.BABAB..AB.A..B.A......B..BAA.A.B.B.A.A.BBAAA.AA.ABAB.AA..B..AA..ABBABA..AA....ABBA.AB..BBBBABB.BA.ABB....B.A.ABBB.B....BAABAA...BAAB..BABB.AB..BBBBA...B.A.ABB..BA.BB.B..AA.B.B...B.A..BBB..B.BAAB.BB.BAA..B.ABAA.AB.B.BA.BB.B....AAB.BB.B..ABAAA.B.AAAB....B.AA.A.BBBBBBA..BA..AB.BBBBB.BAAA.B..BBAB....A.B.BB.B.ABABA....AB...AA.AAA..BBA.BA.B...AAA..AA.B..ABBAABB.BBAA.A..B.BBBAAA...BAB.A.AABBAB...B..AAB..BBB..BB.A.BBBBA.BAB..ABAABAAB......B.B.B...BB.BAA.BAB.B..BB..BB....ABAB.BBBB....A.B...AB..A.B..AB..BAB.B.BA..B...A.BAB....A.B.B..BA....AAA..BA.A...A.AAA.A.BBBB.A.ABBA....B.BB.BB.B...BB..A..B...AAA.BBBB.A.AA.BAABAB..B...B..BAA.B.BAB...AB...BBBB..A....A.A..BA..BA..A.AA.BBB..AB.BA..AABB..B....A.B..BAB.AB.A..A.B..BAA..A.B.A..B.BAABAA.A..A...A.AB.A...BB..ABB...A..A..BABBBA.AB.AB..B.A....B...AA.BB.ABA.ABB..AA.A.B.BAB..A..AAB..B.BAAA.A.B.A..A..A.BA.AA.A.AAB...AA....B.AB.A..B.AABAB..B.AB..A.BBA..BABABA..ABBAA.B.A.ABBAABB..AB.AAB..BAB.BB..BA.AAB..BBBB.B...A.B..BA..B.A.ABBBA.AAB.B.B..A.BB...A.A.A....BB.B.BBABB.BABAAB.ABAABA.A.AB.B.BBABAB.BB.AB.A..A..A.AAB..A...B...AA..B.B....BB..BA.AAB..BB..BB..B...AA...AB...B.....B.A...A....BBB...BBB.ABBAABB.B..B..B.BABABAB.B...BA.....BBA.BBBBA.BAA.BAAAA..B.A...B...A.B...A.B...A.AA.AAA..BABB.ABAAAB.AA..A...BA.A.B.A.BA.B..AB.A.B..A.ABBA.BA.AB.A.AAB.A.B..AAABAAB.AA"

Returns: "BAABAABABABAAABABAAABBAABBABBBABABABABABAABAABAABABAABAABABABAABABAAABABABAABBAABAABABAAABAABBAABABABABBAAABAABABAABABBAAAABBAAAABABAAAAAABAABAABABAABAABABAABAABABAABBBABBABABAAABABAABAABAABABABAAABBAAABABABAABAABABABABABBAABABABABAABABABABABAAABAABBABAAAABABBBABBAABAAABABAABABABABBBBAABBABABABBABAABABBBABABABABABBBABABABABABABBABAABBBABABABBABABABAABABABABABABBAAABBABABAABABABAAABABAABAABAABBBBBBABAABAABBAABAABABABBABBAABBAAABABAABBAABBABABAAABABABABAABAAABABAABBBAABAABAAAABABAAABABABABAAAABAABABABAABBABAABABABBABAABABABBAABABAABABABABAABBABAABABABABABAABABBABBAABABAABBAAABABABABAAABABABABAAAABABABAABAAAABAAABABAAABABABABABBBABABABABABBBAAABAAABABBABABABBABAABABABABBAABAABABABBBBAAABABAABABAABAAABABABABAABAAABAABAAABABABAABAABAABBABABAABABBBAAABBABABBABBBBBABABBBBBAABAABAABAABABABAABBABBAABAAABAAABAABABABAABABAABBBAABAAABBABAAABAABAABAABAAAAAABABABABBABAABAABAABAABABABAABAAABABABABABABAABAABABBBBABAABAABABABABBABABAABBABAABAABBAAABABABAAAABAABABBAAABABABABABABABABAABAABAABAABBABABABABABAAABABBAABABBABABAABABBAABAABAABBABABABABABAABAABAABAABBBABABABABABAABABAABABABABABAAABABABABABAABABABBBABABAABABABABAAABABAABAABABAABAAABAAABAABAAABABAABAAABABABABABABAABABAABABABABAABAABAABABAABAABBAAABAABABABAAABABABAABAABBABABAAABABAABBABABAABBBBABBABABABBABAABAABABBBABABAABAABAABAABAABAABABBAABAABBBBABAABAABABBAABAABBABABAAABABABABAABABBBAABABAABABBABAABABAABAABABABABAABBABABABAABABBABABABAAAABAAAABABAABAAABAABBBBBBABABABAABABBBBBABAAAABAABBABABABAABABBABAABABABABAABABAAABAAABABBAABAABABAAAABAAAABABABBAABBABBAABABABABBBAAABAABABAABAABBABABABABAABAABBBAABBAAABBBBAABABABABAABAABABABAABABABABABBABAAABABABAABBAABBABABABABABBBBABABAABABAABABAABABABAABABABABABABABAAABABABABAABABAABABABAAAABABABABABABAAABAABBBBAABABBABABABABBABBABABABBABABABABAAAAABBBBAABAAABAABABAABABABAABAAABABABABAABABABBBBABABABAABABABABABABAABAAABBBABABABABAAABBAABABABAABAABABAABAABAAABAABAABAAABAABABABAABAABABAABABABABAABAABBABABBABAABAABABABBBABABAABAABAABABABABAAAABBAABABABBABAABAABABABABABAAABAABABAAABAABAABAABAAABABAABABAABABAAABABABAABAABABAAABABAABAABABAABBABABABABABAABBAAABAABABBAABBABABAAABAABABABBAABABAABAABBBBABABAAABAABABABAABABBBABAABABABABAABBABAABABABABABBABABBABBABABAABAABAABABABABABABBABABABBAABAABAABAABAABABABAABABAAABABABABAABBAABABAABAABBAABBAABABAAABABABABABABABABAABABABABABBBABABBBAABBAABBABAABAABABABABABABABABABABAABBAABBBBAABAAABAAAABABAABAABABAAABABAAABABAABAABAAABABABBAABAAABAAABAABAABABAABAAABAABABABAAABABABABBAABABABAABAABAAABABAAABAABAAA"
2

".B......B...A....A......B......A.B.........B....B....B.B..........A.BB..B.A...........B..A.....A..B......B.B...B.A....AB..........A...A.A.A.....B.AA.A.B..A.B..A...A.......B.....ABA..B.AA.A......A......A............A..........BB..A..A...A....A..B..B..........A.B...B....B...A..AB...A......B...A..ABA..A.....B.A......A.B.......B.B.AAB.B..B....A...A........B.A.............BA.A.........A.A...BB.........A..........B.B.A.A..B...AB.A..B....A.....B..........B..AA..B........B..B.A...B.........AB....A.BB.BB......B......BA..A..B...............A....B...B.A.....B.B......B.....A.A...BB...A.A....A..........B......B.....A.ABB....AA.......A...AB.....B.A.A......A..B...........BA.AA.A.....AA.....BBA............BA..B........BA.....BAB..BB........A.............B....A.BA......A......BA.A.A...A.B.......B...A...A...........A.A..........A.AA.......A..B.....................A..........BB.B...BA..A.BB.BA..B..A..BBAA.A...BA...BB...A......AB...A.....AB...A...B........A.BB..B...AA.A...A...A..B................B....B..A..BB....A..BAAB......A..B...B...............BB.......B.....A.B..................A.A....A........B....B...........A.A............B.AA....A.A.....AA.B.......A.AA...BB.B....BB...A..............B........AB..A....A..A...B.A...B......ABA.....B.A.A...........AB.B..B..AA...A....B..B.....BA....A..A.B..B.......B....A......A..B...B...B.........BBA...B.A.....B....B..BA...........BB...B....A..B..A......B..BA..B.A...A.......A...........A...A.A.....B.....B..B....B........B...AA...............B....B.....AB........A....A................B..A...AB.......A.BB.......B...B.A..........B......A.....B.BA...B.....B..........A.......B......A....A.A.B......A..A...AB...B.........BAAB.........B..A...BA...B.......A...B.BAB.A.A..B...B.......B....B..B.A.B....BAA...A..B....B.....A..B....A...B.B.B..B.BBBABBAA.AB..A.A..B..A.AA...A...AB..B.B......B.....B..B.B.B.AAB..A..A..B.........A.B.B.......AB.B............BB.A...AB.A........A...A..A.A.AB...........A...B.BABB........B.BBA...AAA..B.B..A....B....AAB..A.....AB............B.........B.A.AAB.A............BAA...A..A..A.B..B.B...........A.A....B..A..B.AA..ABBA..AB.....B.BBB.A.....B.B...............B............A..ABA....A.........B...........B...BA.A.............B.......AA....B"

Returns: "ABABABAABABAABABAABABABABABABABAABABABABABABABAABABAABABABABABABABAABBAABAABABABABABAABABABABABABABABABAABABABABAABABAABABABABABABABABABABABABAABAAABAABABAABABABABABABABAABABABAABABABAAABABABABAABABABAABABABABABABAABABABABABABBABABAABABABABAABABAABABABABABABAABABABABAABABAABAABABAABABABABABAABAABABAABABAABAABABABAAABABABABABABAAABABAABABABABABABABABABABAABABABABABABAABABABABABABABABABAABBABABABABAABABABABABABABAABABABABAABAABABABABABABAABABABABABAABABAABABABABABAABAABAABAABABABABABAABABABAABBABBABABAABABABAABABAABABABABABABABABABAABABABABABAABABAABABABABAABABABAABABAABBABAABABABAABABABABABABABABAABABABAABABBABABAABABABABABABABABABABAABABABABAABABABABABABABABABAABABABABAABABAABBABABABABABABABABABABABABAABABABAABABAABBABABABABABABABABABABAABABABAABABABABAABABABABABABABABAABABABABABABAABABABABABABABABABABABABABABAABAABABABABABABABABABABABABABABABABAABABABABABABBABABABABAAABBABABABABABABBAABABAABABAABBABAABABABAABABAABABABABABAABAABABABABABAABBAABABAAABABABABABABABABABABABABABABAABABAABABABABBABABABABAABABABABABABABABABABABABABABABABBABABABABABABAAABABABABABABABABABABABABABAABABABABABABAABABABABABABAABABABABABABABABAAABABAABABABABAAABABABABAABAABAABBABABAABBABAABABABABABABABABABABABABABABABABAABAABAABAABAABABABABABABABAABAABABABABABABABABABAABABAABABABABABAABABABABABABAABAAABAABABABABABABABABABABAABABABABABABABABABABABBABAABAABABAABABAABAABABABABABABAABBABABABABABABABABABABABAABABABAABABABABABABABABABABABABABABABABABAABABABABAABABAABABABABAABABAAABABABABABABABAABABAABABABAABABABABABABABAABABABABABABABABABABABABABABABABAAABBABABABABABABAABABABABABABABABABABABAABABABAABABABABABABABABABABABABAABABABABABABAABAABABABABABAABABABABABABABABABABAABABABABABABABABAABABAABABABABAABAABABABAABABABABABABABABABABAABAABAAABABAABAABABABABABAABABABAABABABABABAABABABAABABBBABBAABABABABABABABABAABABABABABAABABABABAABABABABAABABABAAABABABAABABABABABABAAABABABABABAABABABABABABABAABBAABABABAABABABABAABABABAABABABABABABABABAABAABABABBABABABAABABBABABAAABABABABABABABABABAABABABABABABABABABABABAABABABABABABAABAABAABABABABABABABAABABABAABAAABAABABABABABABABAABABABABABABABAAABAABBABAABABABABABBBAABABAABABABABABABABABABABABABABABABABABAABABABAABABABABAABABABABABABABABABABABABABABABABAABABABABAAABABAB"
2

"BBABBBAABAAABBBAAAAABBABABABABBBABABABAAABBBABBAABBABAAABAABBAAABABB.ABABBAABBABBBBBAABABAAB.AAA.ABABAABBBABBBBABAAAAABBABBBBBBAABBAABAAABAA.BBBBABBBBBBBAABBBAAABAABAAABABAAABABBAAAAABAAABABABBAAAABBBBBBAABABABBBBAB.ABBBBBBAABBBBBBBABBBABBBBAAAAABAAAAABBAAABBABABBABBAABAABBBABAAABAABBAAABBBAAAABAAA.ABBABBBBBBBABAABBAABAAAA.AAAABBBAABABBABBAABABAABBBAAAAABBAAAABABBAAAAAABBBAAABABBABBBBABBBBAABAAAABABABBABBAAABBBBBBBABABB.B.BBABBBAAABBABBABBAABBAAABBAABAABBAA.BBBAAABBBBAABBBAABAAAABAAAAAABBBBABBBAB.ABABAAAABAABBBABBBAAABABABABABBBAABBAABABBABBBBBBABAB.BBBABAAAABBBABABBBBAABBBBBABABABAABBBAAABBBBBBAABBABBAABBAAABABBBBABBBAABBBABAAAABABA.BBAABBAABAABAAAAABABABBBBBABBAAAABBAAAABABABBABAAABBABAABAAAAABBAAAABABAAAAAABABBABBBBBBBBBABAABABABAAABABABBA.BABAAABAAAAABBABAAABBABBABAAAAAABBAAAABBBBBBABBBABABBBABABBAAAABBAABABAAABBABAAABAA.BBABAABABAAAAAAABBA.AABBABBABBAABAABBAABBBBA.AABAAABAAAAABBABABBAAAAAABAAAAAABABABBBBABB.BBABBAABBBABBABBBAABABBABAAAABBBABBABBBBABABAAAABBAABAAABBAABAAABABABBBBBABBABAABAABAABABABABABBBAABABBAABAAABA.ABBBBABAA.BBBAAABABBBABAAABABAAAABBBAAABBABAABAAABBBABBAABABAAABAAABAABAABA.BABABAABABBBABAABBAAABABBAABBAABBBBAABABBABBBBABAAABBABAAABABBAAABBBABABBAABBABBAABBBAABA.BBBBAABABBBABAAABBAABBABABAAABBABBBBBABBABBABAAAB.BBBABAAAABABABAAB.BAAB.ABBBBAAABBBBBAAABAABB.BABBAAABBBBAABBABABBAAAABBBBB.BABABBBAABBBBBBAAABABAAABBAAAABAABAAAAABAAABABBBAABAABABABABABBBBAAABAABABBBAAAAA.ABAAABBBABBABBBBBABAAAAAABAAABBAABAABBABAABABABBBAAABBBAABBA.BBABABAAABABABAABAAABBBBAABABBBBBBABABBABBABAABBBAAABABBBAAAABAAABBABABBBBBAABAAABAABABBBBAABABABAAABABBAAAAAAABBAAAAABAAABBBBAAABAABBAAAAABBBBABABAAABAABBABBBAAAAAAAABABAAAABAAABBBABBBAAAAABBAABABAABAABABAAAABAAAAABAAAAABBAAABBBAAAAAB.ABAAB.BABBAAABBBBAABBABBAAABAABBBBABAABBABABBABBBABBBAABABBABABBAAAABABABABBABBBBBAAABBBAABBBBABBBBBBBBAABBABBAAAABBABABAABBAABABBBBAAAAAAABABBBAABBBBBAAABAABABAAAABBBABAAAABBBABA.BBBABABAAAAAABBBBBBAAAAABBBABABAAABAAAABBBBBABAABABABAABAAABBAB.AABABABBABAABABBBBAAAAABBBBABBAAAABBBAABBBABAAAAABAAAAAABBABBBBBAABBBBABBABBAABAABABAAABABABABAAABBBABBBAAABBBBAAAAABBAABABABAABAAAAAABBBABBBAABBAA.ABBABBA.BBBBAABAABAABAABAABABABAABBBAB.ABBA.BABBABABAAAABBAABBAAABABBAABABAABBBBBABBABABBBAAAB.BABBBAAAB.ABAAABABBABBBABAABBAAAABBBBABABBAAAABAAABBAAAAAABA.ABAAAAAABBAABAAABAAABAABAAAABAAABABBAAABBBABABABAABBBAABBBAABABBBBAABABABAABBABBABBABAAAABBABBABAABBBBAABBBAAAABAABABBBABABBBBAABBBBABBAABABABBABAABAAAAAAABABBABB"

Returns: "BBABBBAABAAABBBAAAAABBABABABABBBABABABAAABBBABBAABBABAAABAABBAAABABBAABABBAABBABBBBBAABABAABAAAABABABAABBBABBBBABAAAAABBABBBBBBAABBAABAAABAAABBBBABBBBBBBAABBBAAABAABAAABABAAABABBAAAAABAAABABABBAAAABBBBBBAABABABBBBABAABBBBBBAABBBBBBBABBBABBBBAAAAABAAAAABBAAABBABABBABBAABAABBBABAAABAABBAAABBBAAAABAAABABBABBBBBBBABAABBAABAAAABAAAABBBAABABBABBAABABAABBBAAAAABBAAAABABBAAAAAABBBAAABABBABBBBABBBBAABAAAABABABBABBAAABBBBBBBABABBABABBABBBAAABBABBABBAABBAAABBAABAABBAAABBBAAABBBBAABBBAABAAAABAAAAAABBBBABBBABAABABAAAABAABBBABBBAAABABABABABBBAABBAABABBABBBBBBABABABBBABAAAABBBABABBBBAABBBBBABABABAABBBAAABBBBBBAABBABBAABBAAABABBBBABBBAABBBABAAAABABAABBAABBAABAABAAAAABABABBBBBABBAAAABBAAAABABABBABAAABBABAABAAAAABBAAAABABAAAAAABABBABBBBBBBBBABAABABABAAABABABBAABABAAABAAAAABBABAAABBABBABAAAAAABBAAAABBBBBBABBBABABBBABABBAAAABBAABABAAABBABAAABAAABBABAABABAAAAAAABBABAABBABBABBAABAABBAABBBBABAABAAABAAAAABBABABBAAAAAABAAAAAABABABBBBABBABBABBAABBBABBABBBAABABBABAAAABBBABBABBBBABABAAAABBAABAAABBAABAAABABABBBBBABBABAABAABAABABABABABBBAABABBAABAAABABABBBBABAAABBBAAABABBBABAAABABAAAABBBAAABBABAABAAABBBABBAABABAAABAAABAABAABAABABABAABABBBABAABBAAABABBAABBAABBBBAABABBABBBBABAAABBABAAABABBAAABBBABABBAABBABBAABBBAABAABBBBAABABBBABAAABBAABBABABAAABBABBBBBABBABBABAAABABBBABAAAABABABAABABAABAABBBBAAABBBBBAAABAABBABABBAAABBBBAABBABABBAAAABBBBBABABABBBAABBBBBBAAABABAAABBAAAABAABAAAAABAAABABBBAABAABABABABABBBBAAABAABABBBAAAAABABAAABBBABBABBBBBABAAAAAABAAABBAABAABBABAABABABBBAAABBBAABBAABBABABAAABABABAABAAABBBBAABABBBBBBABABBABBABAABBBAAABABBBAAAABAAABBABABBBBBAABAAABAABABBBBAABABABAAABABBAAAAAAABBAAAAABAAABBBBAAABAABBAAAAABBBBABABAAABAABBABBBAAAAAAAABABAAAABAAABBBABBBAAAAABBAABABAABAABABAAAABAAAAABAAAAABBAAABBBAAAAABAABAABABABBAAABBBBAABBABBAAABAABBBBABAABBABABBABBBABBBAABABBABABBAAAABABABABBABBBBBAAABBBAABBBBABBBBBBBBAABBABBAAAABBABABAABBAABABBBBAAAAAAABABBBAABBBBBAAABAABABAAAABBBABAAAABBBABAABBBABABAAAAAABBBBBBAAAAABBBABABAAABAAAABBBBBABAABABABAABAAABBABAAABABABBABAABABBBBAAAAABBBBABBAAAABBBAABBBABAAAAABAAAAAABBABBBBBAABBBBABBABBAABAABABAAABABABABAAABBBABBBAAABBBBAAAAABBAABABABAABAAAAAABBBABBBAABBAABABBABBAABBBBAABAABAABAABAABABABAABBBABAABBAABABBABABAAAABBAABBAAABABBAABABAABBBBBABBABABBBAAABABABBBAAABAABAAABABBABBBABAABBAAAABBBBABABBAAAABAAABBAAAAAABABABAAAAAABBAABAAABAAABAABAAAABAAABABBAAABBBABABABAABBBAABBBAABABBBBAABABABAABBABBABBABAAAABBABBABAABBBBAABBBAAAABAABABBBABABBBBAABBBBABBAABABABBABAABAAAAAAABABBABB"
2

".....BBB.....B..B...B......B........A..A...B...ABA.A..B.......AB....AAAB.B....B...A.A..........A..BBA.B.A.B.BAAB.....AA.AA...A.BB.BB..B.B.B........ABBA..AABBBAB......A.A.....BAA..A...B.AA.B..AA..B....BB.BB..BA...AB.AAA.........BBA..B...AB..AA...BBBA......A....B.B.......AB.....A.B..AAB.AB..B..B.BBBB.A...A....B....BAB.BBBBA.......AA.......B....B......AB..B..BA..A.....A...B.........BA......A.......A.....A.BB...A...B.......A.......B....B........B...B.B......A.....A..BA..AB.AA...........B...B...B....A...BA.A.A.A.AB....BABBB.A....B...A.......AA..............BB.......AB....A.......AAA.BAA....AA.BAA.ABA....A.......A.AA.....B...........B..B..A..AA.BA.A.AA....B.BB...B..B......A.......A..........AB.......B..A......BA.........AB......A.......A..B...B..BAA....A....B..A.A.B..A.A.B.A.....A......B.B..BB...AA......A...B........B..BABA..A........B.......AA.A...AB...A.BA.......AA..A............B...A..A..A.B.......B......A........AB......ABBAA.BB.A..B..B..B......AA.......B.A..BAA....B.....A..BB...B.A....B...A.....B..BA......BA............B.AB............ABA...AB....B.......AB....B...AB.....B.A.B.AA.A.B.AA....B.A..A....B.A.AA.A..B.....B..B......BA...AAAB...BBA...AA........B...B....A.A...A...A....A.....A..BA.B.............BAB..AA......B..BB.....A.....AB................AAB......ABB.B........A..A...A.AA..BAB.......AA...A...A...B..AA....B..A.A.A..A.AA.B...BAB..ABB.....B.B.B...B.AB...BAB.................AAA.B...A...A....B....B........A..A.B......AA..BA..A..A..A..........B..A.....AB.B.BA....AB......BAB.....A......BB.........A...AB.........B.B..B..BA...BABB.....A....A........A.B........B..B.......BA..B..B.A...A.B...A..B................BA...A.B.............A...A.AB.A..A......A...A........AA.....B.A..A......AAB...BA.......A.B.BB..B...B.B..A...BAABAA....B..B.A..A.....B..B...BA.A......A....AB........B.B.......A.....B.B..BA.A...B....B....B..BB.....A.......B..BAB..A...B...A.A..........A......B.BBA..........A...B.AA.B...........A.A....A......A.B.A.B..........B..AA.A.BB.AB...AA.A....A.......B.A......B.......A.......B.....BA..BB..A."

Returns: "ABABABBBABABABAABABABABABAABABABABABABAABAABABAABABABABABABABAABABABAAABABABAABABAABABABABABABAABABBAABAAABABAABABABAAABAABABAABBABBAABABABABABABABABBABAAABBBABABABABABABABAABAABAABAABAAAABABAABABABAABBABBAABABABABAAAABABABABAABBABABABAABABAABAABBBABABABAABABABABABABABAABABABAAABABAABAABAABAABABBBBAABABABABABABAABABABBBBABABABABAABABABAABABAABABABABABAABAABABAABABABABAABABABABABABABABABAABABABABABABABAABBABAABAABABABABAABABABAABABAABABABABAABABABABABABABABABABABABABAABAAABABABABABAABABABABABABABABAABABABABABABABAABABBBAABABABABAABABABABAABABABABABABABABBABABABAABABABABABABABAAAABAABABAAAABAABABABABAABABABABABAABABAABABABABABABABAABABABAAAABABABAABABABABBABABAABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABAABAABABAABABABABABAABABABAABAABABABABABABABABAABBABAAABABABAABAABABABABAABAABABABAABABABABABABABABAAABABABABABAAABABABABABAABAABABABABABABABABAABAABAAABABABABABABABABABABABABAABABABABABBAAABBAABABAABAABABABABAABABABAABAABABAABABABABABAABABBABABAABABABABAABABAABAABABABABABABABABABABABABAABABABABABABABABABABABABAABABABABAABABAABABAABABABABAAABAAABAABAAABABABAABAABABABAABAABABABABABABAABABABAABABABAAABABABBABABAABABABABABABABABABABABABABABABABAABABABABABAABABABABABABABABABABAABABABABAABBABABAABABABABABABABABABABABABAABABABABABBABABABABABABAABABABAABABABABABABAAABABABABABAABABAABABABABABABABAABAAABABABABABABBABABABABABABABAABABABABABABABABABABABABAAAAABABAABABABABABABAABABABABABABAAABABABABAABABABAABAABAABABABABABABABABABABABABABABABAABABABAABABABABAABABABABBABABABABAABABABABABABABABABAABAABABAABABBABABAABABAABABABABAAABABABABAABAABABABABABABABAABAABABAABABAABABABABABABABABABAABABABAABABABABABABABAABABABABAABAABABABAABABABABABABAAABABAABAABAABABABAAABABABABABABABAABABBAABABABABABABAABAABAABABABAABAABAABABAABAABABABABABABABAABABAABABABABAABABABABABAABABAABABAABABABAABABAABABAABAABBABABAABABABAABAABABABABAABABAABABABABABABAABABABABABBABABABABABAABAABAAAABABABABABABAABABABAABABABAAABAAABABABABABAABABAABAABBAABABAAABABABAABABABAABAABABABABABABABAABABABAABABABABABABBABAB"
2

"AABA.A....AB.AB..AB.A..BA..BA.AA.BBAB.B....B.B.BBB....B..B..B.BBABBBA.......AB..BB....B....AA..A......A..AB..AA..B...B.B....BABA..A.A......BA....B...BB.....BAAA.A......B.........ABA...A..AA.A.B.B..AA..AB.......B.AA..A....B.AA..AB.BAAA....ABA...AAABB..B...B.B.B...........BB.A.....BA..B.B...A.BAAAB.AB.....BA...BB..A.A.....B..A.B.A.BA..BA..AA...AB..A..A..BA.BBA....B..BA.B...ABA.AAAB....AB...B.A.A....A.ABA.B....A........A.....BA..AB...A.B.....AB.BB.A.AA..B........ABB.A..AA.B..B....A........A..BB....A.BBAA....A.A.ABAAA.BB...A.A.B......B.A.....AA....AABB.AB....BA.A.B.....A.BBA.A......BB...BABA.B..AAAA.ABB.......B..AA..ABB..A.A..A.AAA....B..B.A.A.BA.BA.BA.A.AB.AA..BABA.......AABAB..AABBA...B.B..BA..A.BBAA..B.BAA.BAAA....B.A..A..A..BBA.......A.B.BAA......A...........A...B..BB..A.A......A..AABBB.B.BBAAA.B...AA.....A.A..A.....BB.A..A.ABB.AAB.B.AA.B..A.A..A.A.AAA..AA....A.A..BAAB.....A..B.AB...A.B...AB..A.A..AA.A.....AAAA.AABAA..ABAAB.A..A.B..B...BABAA......AB....ABA.BBBA....BA.A..AAA.B.B.ABBBA.B...A.B.A.B...BA.AA..A.A.A..BAA..A.B...B.A.AB...BB......AB.BB......AB..A..B....A...AB..AAAABAABA....BB.....A.A.BBA..B.B..A.A....BABAAB....BB..AA...A..B.A.B.A.B...BB.A....................AA.A.B..B...A.BA..BAA..AA....AA..AA.B..BBAAA...AA.A.AA.B.B....AA....B..ABA.A.B.B...AB.B.AA.BBBBBBBA..B.A..B.BA..BB.B...A..A.A.AAB.AA..A...AB.AA...B....A.......B.AB.AA..B.....B...BB......BAA...BA.BA.A.ABBA.AAA..A......B.A...ABA......BB....B.BB.....ABA..A.BAB.....A..A..A.B.......AA.A.A...BA..AABA.B.B..A.BA..B....A..AB.AA.B.BB..AA..AB...B.B..AAB.BBB........BBB.A..BABAAABA.AA.BB.BA..AAAA.B.B...AA..BA...B.BA.....B...BBBA.B...BB...B.B.A.A.A.A.BBA.....AAAB...ABBA.A....ABAB.B.ABA.AA.A.AA.A..B..BA..A..............B..BB...AAB.BB.B.....AA.....AB.BBB.....A.B..AAA.A..A.BA.A.....BA.B.....A.BA..BBB.B.BBA.AABBA.B....A....B..BA.AAAA.A..ABA.BA.BA..A..A.B.A.A..BAA..B.AA.....A.A..BBBB..B...A..BA.B.AAABBA..A..BAB...A..A.BBB.BAAA.B..BAA.A....B.......A.A.......B..B.BBBB.BB.A.B.....A.AAB..B..ABB..BB.A...B..........A..A...A...AA..A...B.BA.A.BA.B...ABA..A..B...AAAA..B.B...A...ABBA....A..B..AB.BAAA..B.ABB..B.AA...A.B..B.BB.A.AB.A.B.ABA....A....BABA.....B.AAA."

Returns: "AABABABABAABAABABABAABABABABABAAABBABABABAABABABBBABAABAABAABABBABBBABABABABABAABBABAABABABAABAABABABAABAABABAABABABABABABAABABABAABABABABABABABABABABBABABABAAABABABABABABABABABAABABABABAAABAABABABAABAABABABABABAAABAABABABAAABAABABAAABABAABABABAAABBAABABABABABABABABABABABBAABABAABABABABABAAABAAABAABABABABABAABBABABABABAABABAABAAABABABABAAABABABABABAABABAABBABABABAABAABABAABABAAABABABABABABAABABABAABABAABABABABABABABAABABAABABAABABAAABABABAABABBAABAABABABABABABABBAABAAAABAABABABABABABABAABABBABABAABBAABABAABABABAAAABBABAABAABABABAABAABABABAABABAAABBAABABAABABAABABABAAABBABABABABABBABABABAABABAAAABABBABABABABABAABAABBABABABAABAAABABABAABAABAABAABAABABABABAAABABABABABABABAABABABAABBABAABABAABABAAABBAABABABAAABAAABABABAABAABAABABBABABABABAABABAABABABAABABABABABABABAABAABBABABABABABAABAAABBBABABBAAAABABAAABABABABABAABABAABBAABAABABBAAABABAAAABABABABAABABAAABAAABABAABABABAABABABAABABAABABAAABABAABABABABAAABABABABAAAABAABAABAABAABAABAAABAABABABABAABABABAABABABABAABBBABABABABABAAAAABABAABBBAABABAAABAAABABABABAABAABABABABAABAAABABABAABABABABBABABABABABBABABABABABABABABABABABABABAAAABAABABABABBABABAABAABBABABABABABABABABABAABABAABBABAABABABABAAABAAABABABBAABABABABABABABABABABAAABAABAABABAAABABABAABAAABABAAABAAAABAABBAAABABAABABAAABABABABAABABABABABABAABABABAABABAAAABBBBBBBABABAABABABABABBABABAABAABABAABAAABAABABABAAABAABABABABABABAABAABAAABABABABABABABBABABAABAABAABAABABABABBABAAABAABABABABAABABABABABABABBABAABABBABABAABABAAABABABABAABAABAAABABABABAAABABABAABABAAABAABABABAABABABABABABAABAAAABABBABAABAABABABABABAABABBBABABABAABBBAABABABAAABABAAABBABABAAAAAABABABAAABABABAABABABABAABABABBBAABABABBABABABAABABABAABBABABABAAABABAABBABABABAABABABAABABAABABAABABABAABABAABABABABABABABABAABBABAAABABBABABABAAABABABABABBBABABAAABABAAABABAAABABABABAABAABABABAAABABABBBABABBABAABBAABABABABABABAABABAAAABABAABAABAABABAABAAABAABABABAABABAAABABABABABABBBBAABABAABABAABAAAABBABAABABABABAABAAABBBABAAAABAABAABABABABABABABAABABABABAABAABABBBBABBAAABABABAABAABAABABABBAABBAABAABABABABABABABAABABABABAABAABAABABABAABAABABAABABAABABABAAAAABABABABAABABABBABABAABABABABABAAABABAABBAABAAABABAABAABABBAABABAAABAABABABAABABABABABABAABAAAAB"
2

"ABAAAAAAB.AAA.B.AABABA.A.B.BABBAAA.BABBA.BB.BAABBA.BABAAA..BAAABAAABABA...ABBAABBBAB.AAABABBBABABBBBABB.ABB..BABB.BABBABA.BBBBBB..BAA.B.ABBB.BAABB.ABB.B..ABBAB.B.A.A.ABAAA.BAAAABABBB..A..BABBBBAB.A.BBB.BBBABAABBAAAAB.BA.BBB.BAA.BABBBA..AB.A..BB.AAA.BAA.ABA.AAAABB.AABB..BAABBABBBA.BBAABAAABAABB.BAB.A...BBB.BB.AABAAAAABBBBABBB.B...BBAABAAB...AAABAA..BAABBBAAB.ABBA.A.BBA.B.AABAA.BB.ABA..B.A.B.ABAAAABBABB..AA.AABB..BABABAAAA.BBBAAB..AAA.BB.BB.BA.B..BAA.AAAAABA.BBBBBA.AA.A.ABBAB.B.BB..B..BAAB.AB.A.BAAABABAB.BBABBBBABBABAA.BABB..AAAAABAB.AABAABAABBAB..ABBA.B.BBB.BA.AABBBBA.AABAA.BB..BB.ABA.ABABAB.BB.ABB.B.BBBBA.AABABBBBBABABAABABAABBBB...A.BAABA..BBAAAABBABBAABABABBBB..B.ABBBB.ABB.AA.BBBBABA.AABAAAAAB.A..AAA.A.BA.BA.AAB.BAAABABA.AB.AB..B.AB.B.BAABBABAAA.ABBBBAABBAAB.BAABAAABAA...A.AABA..BBBABBABBAAB..BAABB.AABAB.BAB.ABABBABBAAABBBB...ABAAAB.B.BABBBAAAAAABBAA.BB.AA.BBBBBBBB.AAB.BABAA.B.ABAAABBB.B.AAB.AAABAABB.BB.A.AABBBA.AABAABBB.B.BA.A.BAA.A.AA.ABA.BAABABBB.BA.BAAAAAABBAABBB....BBA.ABBAB.BA..BBA.BAABBBBBAB.BABBB..BAABA.AABB.B.B...AB..BBBA.AA.A..AB.BAB.ABABA..B...BAABBB....BA.BBAA.B.ABBBABBBAABABB.ABBAA.B.BA.BAA.BAAA.AA.AABABBAA.AAB.BBBAAB.BBA.B.BABA..BAA.ABABB.B.AABAA.B.A.BB.AABBA.AAAAA.B.ABB.BBA.BABABBB.BAAAAABAA.AAB.A.AB..AB..AB.AAABB.A.BABAABABABAAABBB..BABA.BBA.ABBBBBABAA.A.BABABBBA.BAA.B.B..B.BA..BA.BBBB..BBBBBABBABA.BB.BABA.B.A.ABBBBA.BA.A.B.AAAA.BBBABBBAAAAAA.BA.ABBA.BBABBABBA..B.AABBABAABABBBBBAB.BBA.ABA.B.B.B.A.B.AB.BAAAAAABAAABBBBABBABB.BBA.BBB..AAAABA.BA.A.A.BBAABABAAABBBBB..ABBA.AAABBBAB.BBB.ABABB.ABB.AAABBABBABA.BAA.BA.AAA.ABA..BBBBBAABBA.AA.BBBAABAA.AAAABAABABB.A.A.AABBABBAAB..A.ABBB.BABBB..AAABBA.BABB.B.BAAAAAAB.AA.BB.B.BB.BA.AB.BABABBB.ABABBAABAABAA.AA.BAA..ABAABBAAAB..AAABBA...BAB.AABBB.BAABB.BA.BBABBBABB.AAABB..BAB..BBBABABA.BBA.B.ABABABBBBAAB..A.ABAA.AAABAAAAABAAB..A.BA.A.BA.ABBABAA.ABBBAAB.ABAB.B.BAAABBBBAA.BAB.ABAA.AAAAABBAAABAAAB..ABB.ABA.BAAAABABAB.BABBAABB..BB.BAABABAB.BAA.BBBBAA..AA.BABB.AAAABA.BABABAAAAA.BBAA.AA.ABBAB..A.AABBAABBAABBBB.AAA.BAB..BBBB.AB.A.ABAAAB.A.BABB..BBBBBABBAAAB.A...BABA.BBAAAA..B..AB.B.AB.BBA.BA.BBBBBABABAB.BBB.ABBAAAAAAB.AA.B.A.AAB.BBB.AAB..BAAABB"

Returns: "ABAAAAAABAAAAABAAABABABAABABABBAAAABABBAABBABAABBAABABAAABABAAABAAABABABABABBAABBBABAAAABABBBABABBBBABBAABBAABABBABABBABAABBBBBBAABAAABAABBBABAABBAABBABABABBABABAABABABAAAABAAAABABBBABABABABBBBABAAABBBABBBABAABBAAAABABAABBBABAAABABBBABAABAABABBAAAAABAABABABAAAABBAAABBAABAABBABBBAABBAABAAABAABBABABAABAABBBABBAAABAAAAABBBBABBBABABABBAABAABABAAAABAABABAABBBAABAABBABAABBAABAAABAAABBAABABABAAABAABAAAABBABBABAABAABBAABABABAAAAABBBAABABAAAABBABBABAABAABAABAAAAABAABBBBBABAABABABBABABABBAABAABAABAABAAABAAABABABABBABBBBABBABAAABABBABAAAAABABAAABAABAABBABABABBAABABBBABABAABBBBABAABAAABBAABBAABABABABABABBAABBABABBBBABAABABBBBBABABAABABAABBBBABAAABAABABABBAAAABBABBAABABABBBBAABAABBBBAABBAAAABBBBABABAABAAAAABAABAAAABAABAABABAABABAAABABABABAABAABAABABABAABBABAAABABBBBAABBAABABAABAAABAABABABAABABABBBABBABBAABAABAABBAAABABABABAABABBABBAAABBBBABAABAAABABABABBBAAAAAABBAAABBAAAABBBBBBBBAAABABABAAABAABAAABBBABAAABAAAABAABBABBAABAABBBABAABAABBBABABABAABAABABAABABAABAABABBBABAABAAAAAABBAABBBABAABBABABBABABABABBAABAABBBBBABABABBBAABAABABAABBABABABAABAABBBABAABABAABABABAABABABABABABAABBBABAABAABBAAABAABBBABBBAABABBAABBAAABABAABAAABAAABAABAABABBAABAABABBBAABABBAABABABABABAABABABBABAAABAAABAAABBAAABBABAAAAAABAABBABBAABABABBBABAAAAABAABAABAABABABABABABAAAABBAAABABAABABABAAABBBAABABAABBABABBBBBABAABAABABABBBAABAAABABAABABABABAABBBBAABBBBBABBABAABBABABAABAABABBBBAABABAABAAAAAABBBABBBAAAAAAABABABBAABBABBABBABABAAABBABAABABBBBBABABBABABAABABABAAABAABABAAAAAABAAABBBBABBABBABBAABBBABAAAABAABABABAABBAABABAAABBBBBABABBABAAABBBABABBBAABABBAABBAAAABBABBABAABAAABABAAABABABABBBBBAABBABAAABBBAABAABAAAABAABABBAABABAABBABBAABABABABBBABABBBABAAABBAABABBABABAAAAAABAAAABBABABBABABABABABABBBAABABBAABAABAABAAABAABAABAABBAAABABAAABBABAABABAAABBBABAABBABAABBABBBABBAAAABBAABABAABBBABABAABBAABAABABABBBBAABABABABAABAAABAAAAABAABABAABABAABABABBABAABABBBAABAABABABABAAABBBBAAABABAABAABAAAAABBAAABAAABABABBAABAABAAAABABABABABBAABBAABBABAABABABABAAABBBBAABAAAABABBAAAAABAABABABAAAAAABBAABAABABBABABABAABBAABBAABBBBAAAAABABAABBBBAABAABABAAABAAABABBAABBBBBABBAAABAABAABABAABBAAAABABABABABAABABBAABAABBBBBABABABABBBAABBAAAAAABAAAABAABAABABBBAAABAABAAABB"
2

"B..BBA.AB.A..AABABBB..BBAABB..AA.ABAB.BA...AAA...A.BBABB.A.BA.BBABBA.B.AAAA..ABBBAABBA..BA...ABBAB.ABABBBABB.AB..BBAB.BABBBBBBAAABBB.BA.AA.BBAB.BBBB..ABAABB.BB.B..AAA.BBBB...ABBA..AAA.BB.B.ABA.ABBB.BAAA.BA.ABBA.AAABAABA.BAA..AABBBABAAA.BBAB.B.A.BA.A.BBABBABABBAB.ABB.B.AB.A...BAB.ABBAAABBA.BABABAABBBBAABABB.AAA.B.AAA.BAA.BBBAB.BAABBAAB.A..AAA..A.ABABAB.BBA.B.AB.B.BA..BBAAAAAAA..B.BBBB.BABAA.BAABABBA.AABABBAAA.ABABABAAA.ABAB.BA.A.BAA.AABA.ABAA.AABA.BABBAABB.BBBA..BA.AB.B.B.AAABABAAAA.BABABA.AABABBB.BA.A.BBBBABBABBBABAAB.ABA.AAABABBA...AAABAAABABBBAAA..BBBBAABBAABBABBBAA.BBAA.AABAB.BABB.AAA.BA.B..A.B.BBABB.AB.BAB.B.A.ABAB.BA.A..AA.ABBA.B.ABBAB.AAA..A.ABA.AAAB..AAA.BBBBBBBABAB..AB.BB.AABB..BA.B.AA.ABBA.BBA..A.AABA.BBAABBAABBA..B...BABBABB.BAAA..A.ABBABBBBA.BABAAA..B.AA.BA.BAA.A...BBBBBAAABA...B.BA.BAA.B.BBABBBA.AAABAAA.BABABBAAABAAAAA.AB..A.BAB.BBABBA.A..BBBBBA..BBAA.A.AB.AA..ABABAA.AABAAAAA..AB.BABAA.BBBA.ABAA.BBA.AAB.BBA.AAA..BB.AA.AB.BBBAA.BAAAA.AAAB.B..BBA...ABAAA.AABBBA..B.A.BBA.A..BA.BBBABBBBBBAABBAAAAAAAAB.BB.AABBB..BBBABAAAABB.AA.B.AABAAB...AAA.AA.ABBBA.BAABBA..ABBAB.BAAABAAABBAAA..BA.BB.B..AAB.AABAAAAB.B.AAABBBBBB.AA.BAAAB.ABABABA.BBABABAABA.BA.ABAAAAA.BAAABABBAAAA.B.B...AAB.BA.B.AABABA.BAAA.AABBB..B.B.BAAA.B.BBAB..ABB..BB.BAABB.AABA.BAB.AAABAAA..ABABA.B.AB..BBAAA.B.BBBAA.A..ABBA...BBBBABA.ABAB.AA.BBBAAAAAABB..BB.ABBABBABBBAAAAABBABAAABBB.BBBBBB.ABABBBAABA.BABBBBABA.BBBBBBBAABB.AB..ABBBBAA.AABBBBBB...BAAAB.BBA.A.AAAB.BBBAA.AA.AA.ABBA.AABABA.BB.BBABB.BA..B..AAAAAABB.AB.BBBAABBBABAA.ABAA..BBA.BA.BBBAABA.AB.B.B..BBBAB.BA.BBBBAAAAAAAA.AAABBA.A..AABA.B.B..BBBAA.AB..BBBABB.ABA.BB.AB.BBA.BB.A.BABBBB.BABBBABA.AAABAA.BA.ABBA.ABA.ABBBBB.AABAA...AAAAB.ABA.A.BBABBBABBBAAAA.AA...AA.BAAA.A.BB..BBAABABBBAAAB.BBA..ABB.B.ABAAAABB.AB..BB.ABAB.AA.BBAA.AABAABBA..AABBAA.AAAB.A.BBBBAAAA.AABAAAAABABAA.AAAA..ABA.AAABAAB.B.ABAABBA.B.BABBBB.BA.B.BBAA.AA.BAAAAB.BBAB.AAABBBBB..BB.ABBAA.BBAB.BA.B.B.B.AAAAABBABB.B.AB..A...AABBBAA.BBBABABBBBBBAB.BAABAAAAAB..BAABB..A.B.BABBB...AAAABBBAAA.BBAB.BABABAAB..AA...A.BBBA.BBA.A..BAB.A.ABB..BAABAB.BBA.BBABABABAABA.BA.B.ABBAAB.BA.A.BA.BA.AAAAABAB.BA.BAAAAAAA.B.AABA.BBBB.ABBBABAA.BBBABAAABBAAAABABB.BABBAABB.BAAAABB.AABB.BBABABB.ABAAAAB.A.BA.BBBBA.BABBBA.ABAABA..ABB.ABA.A.AA.BA.B.AABAAAAABABAABAA.ABBAB.BB.BBA.B.BBAABBBABBA..B.AA.AA....B..B..B.AB.A..A.BAB...AAAABAB.ABB.AB.BBBA."

Returns: "BAABBABABAABAAABABBBAABBAABBABAABABABABABABAAABABAABBABBAAABAABBABBAABAAAAABAABBBAABBABABABABABBABAABABBBABBAABAABBABABABBBBBBAAABBBABABAAABBABABBBBABABAABBABBABABAAAABBBBABAABBABAAAAABBABAABABABBBABAAAABABABBABAAABAABAABAABAAABBBABAAAABBABABAAABABAABBABBABABBABAABBABAABAABAABABAABBAAABBAABABABAABBBBAABABBAAAAABAAAAABAAABBBABABAABBAABAABAAAABAABABABABABBAABAABABABABABBAAAAAAABABABBBBABABAAABAABABBABAABABBAAABABABABAAABABABABABAABAABAABABABAABAABAABABBAABBABBBABABABABABABAAAABABAAAAABABABABAABABBBABABAABBBBABBABBBABAABAABABAAABABBABABAAABAAABABBBAAABABBBBAABBAABBABBBAAABBAABAABABABABBAAAAABAABABAABABBABBAABABABABAABABABABABABAAABABBAABAABBABAAAABAABABABAAABABAAAABBBBBBBABABABABABBAAABBAABAABAAABABBAABBABAABAABAABBAABBAABBABABABABABBABBABAAABAABABBABBBBAABABAAABABAAAABAABAABABAABBBBBAAABABAABABAABAAABABBABBBABAAABAAAABABABBAAABAAAAABABABAABABABBABBABABABBBBBABABBAABABABAAABAABABAABAABAAAAABAABABABAAABBBABABAAABBABAABABBABAAABABBAAABABABBBAAABAAAABAAABABAABBABABABAAABAABBBABABAAABBABABABAABBBABBBBBBAABBAAAAAAAABABBAAABBBAABBBABAAAABBAAAABAAABAABABAAAABAABABBBAABAABBABAABBABABAAABAAABBAAABABAABBABABAABAAABAAAABABAAAABBBBBBAAAABAAABAABABABAABBABABAABAABABABAAAAAABAAABABBAAAAABABABAAABABAABAAABABAABAAABAABBBAABABABAAAABABBABABABBAABBABAABBAAABAABABAAAABAAABAABABAABAABAABBAAAABABBBAABABAABBABAABBBBABABABABAAAABBBAAAAAABBAABBAABBABBABBBAAAAABBABAAABBBABBBBBBAABABBBAABAABABBBBABAABBBBBBBAABBAABABABBBBAABAABBBBBBABABAAABABBABABAAABABBBAABAABAABABBABAABABAABBABBABBABABABABAAAAAABBAABABBBAABBBABAABABAABABBAABAABBBAABABABABABAABBBABABAABBBBAAAAAAAABAAABBABABAAABAABABAABBBAABABAABBBABBAABAABBAABABBAABBAAABABBBBABABBBABABAAABAAABABABBABABABABBBBBAAABAABABAAAABAABABAABBABBBABBBAAAABAABABAAABAAABAABBAABBAABABBBAAABABBABAABBABAABAAAABBAABAABBAABABAAAABBAABAABAABBABAAABBAABAAABAAABBBBAAAABAABAAAAABABAABAAAABAABABAAABAABABAABAABBAABABABBBBABAABABBAABAAABAAAABABBABAAAABBBBBAABBAABBAAABBABABAABABABAAAAAABBABBABAABABABABAABBBAAABBBABABBBBBBABABAABAAAAABAABAABBABAABABABBBABAAAAABBBAAAABBABABABABAABABAABABAABBBAABBABABABABAABABBAABAABABABBAABBABABABAABAABAABAABBAABABABAABAABABAAAAABABABAABAAAAAAAABAAABAABBBBAABBBABAAABBBABAAABBAAAABABBABABBAABBABAAAABBAAABBABBABABBAABAAAABAAABAABBBBAABABBBABABAABABAABBAABABABAAABAABAAABAAAAABABAABAABABBABABBABBAABABBAABBBABBABABAAABAABABABAABAABAABAABAAABABABAAAAABABAABBAABABBBAB"
2

"A.B..B.A.BBABAA.ABBBBBBABAAAA.BA.ABBABBABBBAA.AB.AB..AA.AABABB..AAAB.AABAABB.ABABBB.BAB.AAAB..BABBBBB.ABABABA.AB.BA..BB.BA..A.A.ABA.AABAAB..AA.BABAB.BAAB..ABBBAB.AA.AABA.BA.BBBA.BBABAB.AAB.A..ABB.AA.B..BA.AB.AAA.AAA.BBAA.AABBAABBBBBBBA..A...AAA.A.AABBAAA..ABA.BBABABB.BBABABB.AA.AAA.B.A..BA.AA.B.BBBBBA.AB.BA.BBABBA..AABAAABBAB.A.BABBB.BA..AAAAABBAA.AAAAB..ABABBBA.BAABAB.BABBAB.BAB..BAA.BA.AAAAB.AB.BBBA.BBA..B.BABAAA.A.AA.BBB..ABBBAABBAABB.ABAB.BBAABBAABAB...BA.BAA.B.ABBABAAB.AABBAA.AAAB.A.BABBAABBBBBB.A.A.BAB..B.BBBBABAABAAAAAB..BBAAB.AA.AA..ABBBABBBABBAA.ABAA..ABBA.BBAAABABABAAA..B.A..AAAAA.A.A.AB.ABAB.BBAA.AB.BB.B.BBBBABB..BABABB.B.BBABB.BA.B..A.AAAAA.AB..AB.BBAA.BBBBBAABBBABBAA.A.BA.ABABB.AB..BAAAAAAAA.BA.B..A..BBAAA.BA.BBAABABBAAB.BAAAB.A.A.A.AABB...BB.AB..AA.BA...AAAAB..BAABB.BAB.AAA.AAAA.BAA.BABAABBB..ABAA..BAABABA.ABBABBA..AAA.ABA.B..BAB.B..BAB.BABA.ABAABAAAAAAA.BAA.A..AB.BBB.BABAB.BB..ABA.B..AB.BBA.BBBB.B.ABBBBAB.A.B.AA.BAABABAAAABBAB.BBBB.BBA.ABAA...A.B.ABAABAA..BBBB..B.BB.ABABABBAB.ABBABABBAABBAB.BB.ABA.BBBB..A.AB.B.A.ABB.ABBAA..AB..AAAB...ABABB.BA.BB.AA.BBBB..BA..ABBBAABBABB.BAB.BBB.BAAB..AAAAA.AAABBB.BAB..BABB.A.ABAB..BB.BBABBBAAAAAAB.BAABABBAB..A.BBABBA.ABBABABBBABBB..BAA...ABAB.AAA.BAAB.BBABB.ABABBBBBBB.BB..B.BBAA.BAB.AA.BABB.AABBAABA.BBBB..AABBBABB.ABB.ABAA.A.ABAAAB.BAAAB.ABAAB.ABAABAABAB....BABBABABB.ABBBAAAAAAAABB.AA...AA.BA..B.BBA.ABA.A.BAA.B.ABAABBAAAB.BA.BBBA.BA..ABB..BBABA.B.BAA.ABBAB.ABBBB.BBABABBBAAA..BAA.B..BAB.BBA...BABBBBABA.BB.AA...AABA.A.AAAAABABA.BB.BABABAABBAAABBBAAB.B.B.BAAB.ABABBB.AB....BB.AAAAB.B.B.....AAABBABBB.A.BA..AB.B.AAAA.AABB.ABBABAA.B.ABABBBB.B.AAABAAAAAAA.A.BBABA.AAABB.A..B..BAB..B..AB.ABAAB.ABABA.AB...ABAAA...B..AB.B.BA.BAA.BB.BA...AAA.ABAB.AAAA.BB.BBAAAB...A.BBBBABB.BABAA.A.A.A..B.ABB..B.B..AAA.BAABA.AA.AB.B..BB.BBB.AB.BBA.ABA.BBBB.AABBAB.ABABB.BABAABAAAAAAB.A.B.BBA.BAABABA.BBAB.AA.AAB.AA..BBAB..ABBBAB..B.BABABB.A.A.BBABA.BBA.BB.BAABAABABB.BAAB.BA..BAAABBA..ABAAAAAAABBA.AB..BBB.AAB.ABBB.AB.BA.A.A.BBAAB.BA.B.BBBAA..AABAAABBABBBABB.A.A.BBBA.A.ABABBA.BAAAA..AABA.ABBAB.AAB..BA.AAAAABA.."

Returns: "AABAABAAABBABAABABBBBBBABAAAAABABABBABBABBBAABABAABABAABAABABBABAAABAAABAABBAABABBBABABAAAABAABABBBBBAABABABABABABABABBABABAABABABABAABAABABAAABABABABAABABABBBABAAABAABAABAABBBAABBABABAAABAABAABBAAAABAABABABAAAABAAAABBAABAABBAABBBBBBBABAABABAAABABAABBAAABAABAABBABABBABBABABBAAABAAAABAABABABAAABABBBBBABABABAABBABBABAAABAAABBABAAABABBBABABAAAAAABBAABAAAABABABABBBAABAABABABABBABABABAABAAABABAAAABAABABBBAABBABABABABAAABABAAABBBABABBBAABBAABBAABABABBAABBAABABABABAABAAABAABBABAABAAABBAABAAABAAABABBAABBBBBBAABAABABAABABBBBABAABAAAAABAABBAABAAABAABAABBBABBBABBAABABAABAABBAABBAAABABABAAABABAABAAAAAABABABABAABABABBAABABABBABABBBBABBAABABABBABABBABBABAABABABAAAAABABABABABBAAABBBBBAABBBABBAABAABABABABBAABAABAAAAAAAAABAABABABABBAAAABAABBAABABBAABABAAABAABABABAABBABABBAABABAAABABABAAAABAABAABBABABAAAABAAAAABAAABABAABBBABABAABABAABABABABBABBABAAAABABAABAABABABAABABABABABABAABAAAAAAAABAABABAABABBBABABABABBABABAABABABABBAABBBBABAABBBBABAAABAAAABAABABAAAABBABABBBBABBABABAABABAABAABAABAABABBBBAABABBAABABABBABAABBABABBAABBABABBAABAABBBBABABABABAABABBAABBAABAABABAAABABAABABBABAABBAAAABBBBAABABAABBBAABBABBABABABBBABAABABAAAAABAAABBBABABAABABBAABABABAABBABBABBBAAAAAABABAABABBABABAABBABBABABBABABBBABBBAABAABABABABAAAAABAABABBABBAABABBBBBBBABBAABABBAAABABAAAABABBAAABBAABAABBBBABAABBBABBAABBAABAABABABAAABABAAABAABAABAABAABAABABABAABABBABABBAABBBAAAAAAAABBAAABABAAABABABABBABABABAABAAABAABAABBAAABABAABBBAABABAABBAABBABAABABAABABBABAABBBBABBABABBBAAABABAAABAABABABBABAABABBBBABAABBAAABABAABABABAAAAABABAABBABABABAABBAAABBBAABABABABAABAABABBBAABABAABBAAAAABABABABABAAAABBABBBAAABABAABABAAAAABAABBAABBABAAABAABABBBBABAAAABAAAAAAABAABBABABAAABBAABABAABABAABABABAABAABAABABABABABAABAAABAABABABABABAABAAABBABABABAAABABABAAAAAABBABBAAABABAAABBBBABBABABAABABABABABAABBAABABABAAAABAABABAABABABAABBABBBAABABBABABAABBBBAAABBABAABABBABABAABAAAAAABAAABABBAABAABABAABBABAAABAABAAABABBABABABBBABAABABABABBAABAABBABAABBAABBABAABAABABBABAABABABABAAABBABAABAAAAAAABBABABAABBBAAABAABBBAABABABABAABBAABABAABABBBAABAAABAAABBABBBABBAABAABBBABABABABBAABAAAABAAABABABBABAAABAABABAAAAABABA"
2

"......B.........A.....................B.............A....................A.........................................A...............A....A..........A..............A...B..............A........B...B....B.............A.......................................A.....A..AA...................A................B.............A........................................A....A.................A.B........B........A......A................B....A........B.................B........................B.....A.........A...B...AAA...................................B.................A...........B...................B.....B..........B........................BB....................A...........A..........AB..................................B..........A.........................................A......A.....A............................B.B...........................B.................................A..................A...............A......A.A.......B.B........................................................A...................B................B.....B..................A............AA.........................A..........................B...............................................B.....B.......A..........A......................................B.A...A.......B......A...................................................A...B....AB................A..B.........................B...........................AB...........................A.............A........AA................B..............A...........B............BA.......................A...................B.....B...............B......B...............A.........................A.B.B................A.......................A...A................A.....A.A...................B....A............B.B............A......A..................................B.............B...A..........B...................................B......A..A...................................B......................B..................B......B...........B....B...........B...B..............A...A....AA...........................B................B.........B...........................B............A.......A..................B.................................B..............A................A...B................B.........A.B............B...BB...........A"

Returns: "BABABABABABABABAABABABABABABABABABABAABABABABABABABAABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABAABABABABABABABAABAABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABAAABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABAABABAABABABABABABABABABAABABABABAABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABAABABABABABABAABABAAAABABABABABABABABABABABABABABABABABAABABABABABABABABABAABABABABABAABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABAABBABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABAABABABABABABABABABABABAABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABABABABABABABABABABABABABAAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABAABABABABABABABABABABABABABABABABABABABABAABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABAABABABABABABABABABABABAAABABABABABABABABABABABABABABABABABABABABABAABABABABABABAABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABAABABABABABABABABABABABAABABABABABABABABABAABABABAABABABABABABABABAABABABABABABABABABABABABABABABABABABABABAAABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABAABABABABABABABABAABABABABABAAABABABABABABAABABABBABABABABABAA"
2

"B.AABA.BABAB...ABBBA.AABAB..A...AAAAB.BAAB.BAA..A.AAB.B...B..AA.BBABBAB..B.BABBBAABAB..ABAABAAABB.AAAAAABBBA.B...BAB.BBBBB.A.B.ABB.AA.BAABAAABBBABAAA.BAAA.BB....AA.BABBAAB.A..BA.B.BA.AAA.ABBBABA.BA.A..AAB.ABB.B.BA.B.BB.AA.BABAB.A..B..AABBBA..ABB.B..ABBBA.BBBAA.ABABBABABABA.B.AAAA...AAB.A.A.AAAB.ABA.A.ABBAAAA.BA.AAAB...AAA.A.AAAAB.B.AA..AAA.ABBA..B.A.AABAAABBBA.BBA.AABBBBBAAAB.ABABA.BBAABBBA...BBAB.B.AA.BBB.BBBBA..ABA..AAAAB.B.AB.BA..BBBB.BABB.BABBBBBB.ABA.BA.AABAAA...A...BB.ABAABBBBA..B.AAB.ABBBA.BAABABBAABAAAA.A..B.B.B..B.BAABBAA.BBABAAAB..AB.AAABABBABBA..AABA.BB.ABAAA.B.A.ABBB..ABB.A..BBA.AABAABABABBBBABB.ABBB.B.BBBBB.B.BABB...BAA..B..ABBABAA.B..BABBBA.AB..AB.B...B.BBAB.A.B.BABABAAABA.A.BBAB.AABABB.BABABB.BB.BBA.ABA....A.BAB.BBA..BBBABBBBBB.BBB.ABB.BB.A.BA.ABBABBBB.A.AA.BAABBAAABBBABAAB.BBABAB.AA.BABABBABABAABBA.BA..BAAA.BAAB.....B.BBABBBA.BB..BB.BABABABAB.BABBBABAAA.A.AA.BA....BBB...BAABBBB..BB.B..B.A...BABAA...BBAB.AB.ABAAA.A.B..BBBBBBBBABABBBABABABB.AABBBBAB.A..AABB..BABA.BAAAA..B..A.BA..AAAB.BBB.BBB.BB.AAAABBA..BABAAB.BBBABABAA.ABBAB.B.BBBAB.ABBAABBAAABAAAAA.BBABA.AB..A.AA..BA..B..BA.A..ABAA..BABBAAA..A.AABBABBBABA.B.BA.B..BA.B.BA.AAAAA.A.B.AAAABAAAAAB.A.ABBBABA..BBBAA.BBA.BA.ABBABAA..AB.AB.BA..BBABB.A.B.AAA.BAAAB.B.B.BAAAB..A.AAAA.BBABA..A.BA.ABAA...A..AABAB.AAAB.ABAABBB.BB.A.A.A.B.BB.BAABAB.ABA...ABB.BAB.BB.A.ABA.A.ABAAA...AABBBBBBBBABBAA..BBABA..A..B.A...ABA.AA.BB.BB....AABAB..AA.AAA.A.BABBBAAB.B.BBBBBABB.BAABAA.B.A.BAAB.ABABAAABBAB..A..A.BAA.AABA.A.ABBBBBAA.BB.BBBBBBAB.BB..BBABAA...BBBBBBBABBBABA.BABBBA..BBAA.A.AABBAA.BB.A.BABA.A..A.AAABBB.AAAAAB.BABABBAABAB.BA.BA.BABA.A..BBBA.BB...A...AA.AAAAAB.BABBBBABA...AB.BBA..BABA..B..ABAABAAA..BBAAABABBB.BB.BAAA.BBABAA.ABAAABAA.BA.AB.BAAB.BA.BBAB.ABABBABA.ABA.AABBAABB.BB.AAABABBB.AA.BA.B.AB.AA.BAAA...BAB...ABA.B.B.BBB.ABB.AAA.AB.BA.AA.A.BAB.BABAA.A.A.ABBAA.B..A..A.BBAB.BAA...AABB.BB.BAABBBA.A.ABABBABAAA..AB.B.B.AA.BBAA.AA.B..AB.B.BBABABBAAB.A.AABAAA.A.B.BB.A..BABB.BA.ABABB.ABBAB..BBAABBB.B.ABA.B.AABBAB.B.BA..BBABB..A.BAB.BABABBABB.BABBAAAAB.ABBBB.ABBBBB.AABAB.AABABBBA..B..BB.ABBBABB.BB.B.AB.ABBBAAAABAAABABABAAB.AA...AB.BAAA...A..BBBBBBBABBBB.AA.AA.A.BAB..A.BBA.AA.A.B.BBABB.AA.A.AB....BAAA..AABBAB.A"

Returns: "BAAABAABABABABAABBBABAABABABABABAAAABABAABABAABAABAABABABABABAAABBABBABAABABABBBAABABABABAABAAABBAAAAAAABBBAABABABABABBBBBAAABAABBAAAABAABAAABBBABAAAABAAAABBABABAAABABBAABAABABAABABABAAABABBBABAABABABAAABAABBABABAABABBAAAABABABAABABABAABBBABAABBABABABBBAABBBAABABABBABABABAABAAAAABABAABAABABAAABAABABABABBAAAAABABAAABABAAAABABAAAABABAAABAAAABABBABABAABAABAAABBBAABBABAABBBBBAAABAABABAABBAABBBABAABBABABAAAABBBABBBBABAABABAAAAABABAABABABABBBBABABBABABBBBBBAABAABABAABAAABABABAABBAABAABBBBABABAAABAABBBAABAABABBAABAAAABABABABABAABABAABBAAABBABAAABABABAAAABABBABBABAAABAABBAABAAAABAABABBBABABBAABABBABAABAABABABBBBABBAABBBABABBBBBABABABBABABAABABABABBABAAABAABABBBABABABABABABABABBABAAABABABABAAABABAABBABAAABABBABABABBABBABBABABABABAAABABABBABABBBABBBBBBABBBAABBABBAAABABABBABBBBAABAAABAABBAAABBBABAABABBABABAAAABABABBABABAABBAABABABAAAABAABABABABABBABBBAABBAABBABABABABABABABBBABAAABABAAABABABABBBABABAABBBBAABBABAABAABAABABAABAABBABAABAABAAABAABAABBBBBBBBABABBBABABABBAAABBBBABAABAAABBAABABAABAAAABABABAABABAAAABABBBABBBABBAAAAABBABABABAABABBBABABAABABBABABABBBABAABBAABBAAABAAAAAABBABABABABABAABABABABAABABABAABAABABABBAAABAABAABBABBBABAABABAABAABAABABABAAAAABAABAAAAABAAAAABAABABBBABABABBBAAABBAABABABBABAABAABAABABABABBABBAAABAAAAABAAABABABABAAABABABAAAAABBABABAAABABABAABABABAAABABAAAABAABAABBBABBAABABAABABBABAABABAABABABABBABABABBAABABABABABAAABABAABBBBBBBBABBAABABBABABAABABAABABABABAAABBABBABABAABABABAABAAABAABABBBAABABABBBBBABBABAABAAABAAABAABAABABAAABBABABABAAABAABAABABABABBBBBAAABBABBBBBBABABBAABBABAABAABBBBBBBABBBABAABABBBABABBAABABAABBAAABBAAABABABABAABAAABBBAAAAAABABABABBAABABABAABAABABABABABBBAABBABAABABAABAAAAABABABBBBABABABABABBABABABABABABABAABAAABABBAAABABBBABBABAAAABBABAABABAAABAAABABABABAABABAABBABAABABBABABABABAABBAABBABBAAAABABBBAAAABAABAABAAAABAAABAABABABAABAABABABBBAABBAAAABABABABAABAABABABABAABABABABBAAABABABAAABBABABAABABAABBABBABAABBBABABABABBABAAABAABABABAAAABBAABAAABABABABABBABABBAABAABAABAAABAABABBAABABABBABABABABBAABBABAABBAABBBABAABAABAAABBABABABABABBABBABAABABABABABBABBABABBAAAABAABBBBAABBBBBAAABABAAABABBBABABAABBAABBBABBABBABAABAABBBAAAABAAABABABAABAAABABABABAAABABABABBBBBBBABBBBAAABAABAABABABAABBABAABAABABBABBAAABABABABAABAAABAAABBABAA"
2

"AABABAABBA.BBBBBA.AAA.BABAA.BAAAAB.ABA.AABABABBAABABBABBBB.AAAAABBBAA.BAB.AABBABAAABABBAA.BAB.AAAABB.BBBBBAABBBA.ABBBB.A..AABB.BBAABAAAB.A.BBBAAB.ABBABBAB.AAAAB.AAA..BABAAABBABBB.BABBBAAABBAAA.ABBAA.BB..AAB...AABAABBA.AABAAA.BBBBBBAAAA.BABBBAAABB.BBBBABBBBBBABAAA.ABABAABBABBBABBAB.AB.AAB.B..BAABABBAAAB.ABBABBBBB.BBBB..AABBBBBBA.BAAABBAAAAAABA.AB.BABAAAA.BAB.BBABAABAAAAAB..BAABBBBBBB.BBA.BAB.AABBAABBBB..ABBAA.BBABAAAABAA.BAABBBA.ABABBB.BAAAAAAABBABAA..B.AA.BAAABABAAABBBB.AAABBABAAA.AABBBBABBAABABAABB.BA.ABABAA.BAAABBBAAAABAABBAAAAAABBABBAAAAAAAAABBBB.BBABAABABABAAAABB.AB.BABB.B.AAAAABBABABBBAB.AB.ABBAAAAABBABBBAB..A.ABBAABAA.B.BAABAABA.ABBB.A.BBAABABB.BAABBBBA.AAB.AAABBAAA.BBBBBA.ABBBAABBABBBBBBAAABABB.A.BAB..B..BBBABBBAAABABBBAAAB.A.AABAABB.AAAA.B.B.AABABBABBAAAAAABABAA..BBAAAAABABAABBB.AB.BBAABBAABBAABBAAAAAA.BA.AABB.B.BAAAABABA.AA.B.BAB.B.AABBBBAAB.BAAABA...B.BABAABABAB.BAABBABABABABABAABB.AABBBAAAAABBAAABABA..B..BBBAA.BBBBABBBBBBABABABBAABBBB.BBBAA.ABAABBBAABBAB..AA.B.ABA.BABBAA.BBAAABBBABBBBBBBAAA.AABBBBAB.BBABA.BAABBBBAABBBBABBABBBB..BAABAAABBAABA.BBBBBBABBAAA.ABAABAAAAABAA.B.BBBBBA.A..BA.ABABBAABAABBABBAAA.BAB.BABAABBBA.A.ABBAABBBABAABABAAAAAA.AABBB..B.AAAAAB..B.AAAAABAAAB.BBABABAABBBBAAABBBA.BBAB..BABBBBAAB.BAABAAA..BAABABBBBB.AABAAAA..ABA..BBBAA.B.ABABAABBAABBBBBABABAAB.BBABAAB.AB.BBBBABAABBABBAAABABBABBA.B.BBBAABBAABAAA..AB.BBBBAABA.AABBBBBBBB.AA.BBBBBA.....AA.AAAAB.ABB..BBABBBA.AAAA.ABA.BAAABBAAABABABAAAA.ABBAAABBAABAABABBB.BABAABA.AABAABBBBBABAABABBAABABBBAAABABAB.BBA.BAAABBBAAA.AAABBBBABA.ABBABABABBBAAABBB.BBABAABAABBABABAAAABBBBBBB.AA.BABBBAABBAAAAAABBABAABBABB.ABBAAABBAAAABBBABBBABBBBAABBBA.BAAABAA.ABBBB.BAAABBABAAABAABABAA.ABBAABABBABBBBAABBBA.AAABBBBAAA.BBBABBBBBABBBAA.ABBB.AAAAAAAAAA.ABABBBAABABBAA.ABAAABAAA.ABBAABBBBBBABABBBAB.AABBBBAAA.BBAB.BBB.BAABBABABABBBB.ABBBAAAABBBAABAAABB.BBBAA.BAAABABBBBBBABAAAA.BBBABABABBAAAAB.AABBAABBB..AABAAA.ABBAAB.ABA.BBBBB...AAAABAB.BBBAABBAABAAABB.AAAABBABAAAABAABABBBBABABAAABBABABBAA.BAAABBBAA.AA.BAAAAAAAA.BBAABAABBBABA.BAAB.AAAAABABB.ABB.BAABBA.AAAAAABAB.AAAAAAAABBBBABAABABABB.B.BB.ABABAAAA.AABAAABAAABAAB.BBAAAAB.ABAABAAABBBABBB.BBABB..AAABABBBABBABBBBA.BBABAABBBABBBABB.ABBAA.BABBAAABA.B.AABAAABAAAAB.AAA.ABB.AABBBA..B.BBAABAAABB.AABABAA.BA.BABA.ABA.BBBBBBBBAAABABB.BAABBA.B.AA..ABABBAABABAB.BABAAAABB.BABBABAB.AAB.BABAAABABAABAABBABBBBBAAABAAA.BAAABBABBBBAB.BABBB.BAABB.ABBBAAA.AAAAABBAABBAABB"

Returns: "AABABAABBAABBBBBABAAAABABAAABAAAABAABABAABABABBAABABBABBBBAAAAAABBBAAABABAAABBABAAABABBAAABABAAAAABBABBBBBAABBBABABBBBAABAAABBABBAABAAABAAABBBAABAABBABBABAAAAABAAAABABABAAABBABBBABABBBAAABBAAABABBAAABBABAABABAAABAABBABAABAAAABBBBBBAAAAABABBBAAABBABBBBABBBBBBABAAABABABAABBABBBABBABAABAAABABAABAABABBAAABAABBABBBBBABBBBABAABBBBBBAABAAABBAAAAAABABABABABAAAAABABABBABAABAAAAABAABAABBBBBBBABBAABABAAABBAABBBBABABBAAABBABAAAABAAABAABBBABABABBBABAAAAAAABBABAABABAAAABAAABABAAABBBBAAAABBABAAABAABBBBABBAABABAABBABABABABAAABAAABBBAAAABAABBAAAAAABBABBAAAAAAAAABBBBABBABAABABABAAAABBAABABABBABAAAAAABBABABBBABAABAABBAAAAABBABBBABABABABBAABAAABABAABAABABABBBAAABBAABABBABAABBBBABAABAAAABBAAAABBBBBABABBBAABBABBBBBBAAABABBAAABABAABAABBBABBBAAABABBBAAABAABAABAABBAAAAAABABAAABABBABBAAAAAABABAABABBAAAAABABAABBBAABABBAABBAABBAABBAAAAAAABABAABBABABAAAABABABAAABABABABAAABBBBAABABAAABABAABABABAABABABABAABBABABABABABAABBAAABBBAAAAABBAAABABABABAABBBAAABBBBABBBBBBABABABBAABBBBABBBAABABAABBBAABBABABAAABAABAABABBAAABBAAABBBABBBBBBBAAABAABBBBABABBABAABAABBBBAABBBBABBABBBBAABAABAAABBAABAABBBBBBABBAAABABAABAAAAABAAABABBBBBABABABABABABBAABAABBABBAAAABABABABAABBBABABABBAABBBABAABABAAAAAABAABBBAABAAAAAABAABAAAAAABAAABABBABABAABBBBAAABBBAABBABAABABBBBAABABAABAAABABAABABBBBBAAABAAAABAABABABBBAAABAABABAABBAABBBBBABABAABABBABAABAABABBBBABAABBABBAAABABBABBAABABBBAABBAABAAABAABABBBBAABABAABBBBBBBBAAAABBBBBABABABAABAAAABAABBAABBABBBABAAAABABAABAAABBAAABABABAAAABABBAAABBAABAABABBBABABAABABAABAABBBBBABAABABBAABABBBAAABABABABBAABAAABBBAAABAAABBBBABABABBABABABBBAAABBBABBABAABAABBABABAAAABBBBBBBAAAABABBBAABBAAAAAABBABAABBABBAABBAAABBAAAABBBABBBABBBBAABBBAABAAABAABABBBBABAAABBABAAABAABABAABABBAABABBABBBBAABBBABAAABBBBAAAABBBABBBBBABBBAABABBBAAAAAAAAAAABABABBBAABABBAABABAAABAAABABBAABBBBBBABABBBABAAABBBBAAAABBABABBBABAABBABABABBBBAABBBAAAABBBAABAAABBABBBAAABAAABABBBBBBABAAAAABBBABABABBAAAABAAABBAABBBABAABAAABABBAABAABAABBBBBABAAAAABABABBBAABBAABAAABBAAAAABBABAAAABAABABBBBABABAAABBABABBAAABAAABBBAABAAABAAAAAAAAABBAABAABBBABAABAABAAAAAABABBAABBABAABBABAAAAAABABAAAAAAAAABBBBABAABABABBABABBAABABAAAABAABAAABAAABAABABBAAAABAABAABAAABBBABBBABBABBABAAABABBBABBABBBBAABBABAABBBABBBABBAABBAAABABBAAABAABAAABAAABAAAABAAAABABBAAABBBABABABBAABAAABBAAABABAAABAABABABABAABBBBBBBBAAABABBABAABBAABAAABAABABBAABABABABABAAAABBABABBABABAAABABABAAABABAABAABBABBBBBAAABAAAABAAABBABBBBABABABBBABAABBAABBBAAABAAAAABBAABBAABB"
2

"ABBAAAAAABAB..ABBBBABAAAABB..BBBB.BBBBBBABAAB..AAAABB.AABBBABAA.ABBAABBB.BABBBBAABBBBAA..BABAABAABAA.BAAAB.AA.ABABBA.BABA.BAABABBAA.BBAAAABBABB.BB.BAAAAA.ABABBAAAA.BBABABBBAA.ABAABBAAABAAA.BABA.AB.BABAB.BAABABAB.ABAABBBAABBAAAABBAAABAAABAB.ABBBB.BAAAABAAB.B.ABBBABBB..BBBABBAABA.BB.AAAA.AA.BA.BBBB.AAABABBBAAAABAB.BBAAABA..BABBABA.BBBABABBBBBAA.ABABBABA.AB.BA.BBBABAB.AAABBBBBBBABBAABABABBBABABBAA.AAB.A.BBAB.BBAAAAABBAA.AAAABB.AAABABBABBB.B.BBB.BABBA.BABAAABAA.ABBBBB.BB.BBBABBBABA..ABBBBB.BAAB.ABABB.AAABBBABBBBAAAAAABABABAABBBBBAA..B.BBAB.AABABABAAABBBA.BABAAAAABABBBBBBB.ABB.BBBABBBAAB.BAABABBBBABAA.B.BAABABBA.BABB.BBAAAAABBAABBAABBAAA.AAB.AABAAAAABBB.BBAAABBAAA.AAB.B.AABAABBAAB.BBAABAABBBBABAB.A.BAB.BABAABBBAAAAAAA.AA.BBAB.ABAABABB.BBBBBB.AAABBBBAB.AAABBBBBBABABBBB.AABBAABABAA.AAABBAAAAABABAABBAA.BAAAA.ABBAAABBABBB.AB.B.B.AAABBAABBBAABBBBBBBAB.A.AAABAABAB..ABBBB.BA.AAAABBBAA.BABABB.BAA..A.AABBBBBBA...BABABBABBA.A.BA..ABBB.AA.BBBBBBABA.BAABBBBBBBBABAB.BBBBAAABBABB.AAAABBBBB.AAAABBBBABABAAAAABAA..AAB.ABBBBBAAAAABA.B..BBAABB.BABBAA.BB.ABB.BABA.ABBBAA.AABBBBABAABBABBABAA.BABBAABBABABABBAB.BABABBABBBABB.B.AABBBA.AB.AABAABABBBAB.AABABABBB.BBABABA.AAAAB.ABAAAAAAABBA.BBAAA..BA.ABB.A.ABBBBBBBAAB..ABBABBABBBB.AB.A.BAABBBABB..BBBAB.AAAAABBA.BABABAAB.BAAABBBBABA..ABABAAABBA.AA.AA.ABBABAAAABBB.AB.ABAABBAAABBBAABB.ABBBBAABABABBBABABAAABAAAABABABBBBA.BBAABBBBABBA.A.A.ABBABAAAABAA.AABBBAABBABABABBBA.B.A.ABAAABAAAB.ABBBBABABAABA.AAAA.BBAAAA.B.ABABAABABBBBAABAAABAAABAABAABAABBAABBABB.BBABBBBBBBBBAABABBBAB.ABAAABBABBBBAAABBABAAB.BABBBABBBABBBB.ABBBBB.BAABBBABABABBB.BBBBBAABBABBABAABAAABBABAAAABBBAABAABAABBAA.BABAAB.BBBBABBBAA.BAB.ABBAAABAB.AA.AABA.AAABAAABAABBBA.BABBAAAB.BBABABBBAABABB.BBBBBAABABA.BBBAAABBBA.BABBABA.ABABA.AB.BBBBBBAAABAA.BB.BAAAB..BABBBBAAAAABBBABAAAAAAB.ABBA.BABBAAABAB.BABAAAAABAAA..AABBBBABAABAABAAB.A.AAAB.BBABBB.BBABAAAA..AAAABBABABBAAAAAA.ABAAB.ABAAAAB.AA.AAABAAABBABBABBBBAA.A..ABAABABB.BABBBABBBAAAABB.AABBB.AB.BBABBABBBB.AAA.AA.AABABAAABABAABBBBA.BABBBBBAABAAAAB.BBABABAABBBABBBBBAABBAABB.BABABABBBBB.BBABAAABBABAB.AB.BABAAAA.BABAAABAABBAB.AB.A.BBBAA.ABBABAABBA.ABABAAAAB.BABA.BBBABB.BBBB.A.BBBAB.BBBABABBA..ABBBBBBAB.AABBAB..BA..ABABBAAAAABAABBBBBBABAABBABBAB.ABAABAAAAAAAABBB.ABBBBBBAABABAABBAA.ABBBB.BABAAABA.ABABAAAAABABBAA.BABBBAABBBB.AB"

Returns: "ABBAAAAAABABABABBBBABAAAABBAABBBBABBBBBBABAABABAAAABBAAABBBABAABABBAABBBABABBBBAABBBBAABABABAABAABAAABAAABAAABABABBAABABAABAABABBAAABBAAAABBABBABBABAAAAABABABBAAAAABBABABBBAABABAABBAAABAAAABABABABABABABABAABABABAABAABBBAABBAAAABBAAABAAABABAABBBBABAAAABAABABAABBBABBBAABBBABBAABAABBAAAAABAAABAABBBBAAAABABBBAAAABABABBAAABABABABBABAABBBABABBBBBAABABABBABABABABAABBBABABAAAABBBBBBBABBAABABABBBABABBAABAABAAABBABABBAAAAABBAABAAAABBAAAABABBABBBABABBBABABBAABABAAABAABABBBBBABBABBBABBBABABAABBBBBABAABAABABBAAAABBBABBBBAAAAAABABABAABBBBBAABABABBABAAABABABAAABBBAABABAAAAABABBBBBBBAABBABBBABBBAABABAABABBBBABAAABABAABABBAABABBABBAAAAABBAABBAABBAAABAABAAABAAAAABBBABBAAABBAAABAABABAAABAABBAABABBAABAABBBBABABAAABABABABAABBBAAAAAAABAAABBABAABAABABBABBBBBBAAAABBBBABAAAABBBBBBABABBBBAAABBAABABAABAAABBAAAAABABAABBAAABAAAABABBAAABBABBBAABABABAAAABBAABBBAABBBBBBBABAABAAABAABABABABBBBABABAAAABBBAAABABABBABAABAABAABBBBBBABAABABABBABBABAABABAABBBAAAABBBBBBABAABAABBBBBBBBABABABBBBAAABBABBAAAAABBBBBAAAAABBBBABABAAAAABAABAAABAABBBBBAAAAABAABAABBAABBABABBAAABBAABBABABABABBBAABAABBBBABAABBABBABAAABABBAABBABABABBABABABABBABBBABBABAAABBBABABAAABAABABBBABAAABABABBBABBABABABAAAABAABAAAAAAABBAABBAAABABABABBAABABBBBBBBAABABABBABBABBBBAABAAABAABBBABBAABBBABAAAAAABBAABABABAABABAAABBBBABABAABABAAABBABAABAABABBABAAAABBBAABAABAABBAAABBBAABBAABBBBAABABABBBABABAAABAAAABABABBBBAABBAABBBBABBABABABABBABAAAABAABAABBBAABBABABABBBAABAABABAAABAAABAABBBBABABAABABAAAAABBAAAAABAABABAABABBBBAABAAABAAABAABAABAABBAABBABBABBABBBBBBBBBAABABBBABAABAAABBABBBBAAABBABAABABABBBABBBABBBBAABBBBBABAABBBABABABBBABBBBBAABBABBABAABAAABBABAAAABBBAABAABAABBAAABABAABABBBBABBBAAABABAABBAAABABAAABAABABAAABAAABAABBBAABABBAAABABBABABBBAABABBABBBBBAABABAABBBAAABBBAABABBABABABABABABABBBBBBAAABAAABBABAAABAABABBBBAAAAABBBABAAAAAABAABBAABABBAAABABABABAAAAABAAABAAABBBBABAABAABAABAABAAABABBABBBABBABAAAABAAAAABBABABBAAAAAABABAABAABAAAABAAABAAABAAABBABBABBBBAABABAABAABABBABABBBABBBAAAABBAAABBBAABABBABBABBBBAAAABAABAABABAAABABAABBBBAABABBBBBAABAAAABABBABABAABBBABBBBBAABBAABBABABABABBBBBABBABAAABBABABAABABABAAAAABABAAABAABBABAABAAABBBAABABBABAABBABABABAAAABABABAABBBABBABBBBAAABBBABABBBABABBABAABBBBBBABAAABBABAABABAABABBAAAAABAABBBBBBABAABBABBABAABAABAAAAAAAABBBAABBBBBBAABABAABBAABABBBBABABAAABABABABAAAAABABBAAABABBBAABBBBAAB"
2

".A.....A.A.ABB.AA...A.A..B.A....AB...AB..A.AB..B..A..A..AA.B..AAAA.A.BBA.A.....B....A.AAA....AB....ABB....AA..BB.....BB.BBA.AA.BA..A..........A...B.B......A..B....B..B.BABA.A..B.A.A....B.....A.BAB.BBB........BA..A.A..BB.A..A.A.....B..B..A..........A...AB.A...B.BB...B.A.........B....A.A.A.BA..A...BAAA.A...A...A.A.AA..AAAA..A..B........AB..BB.....A..A.....B....A.BB...BA.....AAA..B.....A...A..BB..B.BB..B...AA...A.B..B..B..ABA.A..AA..B......A...A....BBB..A......AA.AA.B.AB....A...B.B..A.....A...BB...BB......AB.BABA.B...B.B...........B....AB.....A......A..B...ABAB....A...A..B..AA..AA.B......BA.B.....BA.....A..B.......A.A..B.A...A.A.BB..BAA.......A....A..AB......B.B......B.AAB.BAB........B..AABA..BB.A.A....AAA..A..A.AB.....AB...B..A.B.A........A.B.....BAB.BAA..B.ABB.AA...BB.A....B..B...AABAAA.B.BA.......BA..A.AA..A....BA..B..ABA..A..B..A...BA.ABB...BAAB.BA..AA.BA..AB.A...B..A.AB...B.B.B.BBA...A....A..A..A..A..B..B.........BBAB....B.A........B.....AB.B...ABB..A........A..A.AAA.......B...BB...A.........BBB..B...A...B....A....B.BA...A...BA......A.B...A..A.A.AA..BB.A...A...AA..A..BA.B.......A..B.A..A.B..AB..A.BB.BA.AAB.......B......A....B...A.AB...BB.A.......B.A.B.....AB..A..AAA...B.....A.B..A..A.B.BBA.B....AA....A..A....A..BA..A...B.B...A.A.B..A..A..AA............A.....BA..B....A....ABA......A.....B...BB.B....BAAAA.AAA.BA.B.......BB...AAAB.B....AABB..B.A.BABBAB.A.....A......B...A..B..BA.A...B...BA..B..BAA..BBBB.ABBB.B..B..A.....B..BBB..B.BB.........A.....B.B...B...........A..BBB.B.BBB.AA..BA..B......B...AAA....B.A.A.......BBA.BBB..A..BA.....B.A......A...A....AA.B.........BAA...ABB.....B.BABA..BB...B........A..B.AA.......A....B.A.A......A...B..B.BB.B..A....A.....B........A..B...BB...B..A.A...B...A.....A........B.......B.B......A.AA.A.A.A.AB..B.......A........B....AB.....AA...AAB....A.......BA..BBABA.AB.B...A..B....AB.A.....A....B.A.BAB....A...A..BA.AB.BBB.AB.AA.BAAB..ABBBBBA.....ABBABA.BBA.....B.B....B...A.B.B.....AB....BA.B.AA....AB..B.B.....B...A...B.B.B.B.A.BA.....B......B.........BAB....B..A...B.A.A..BBAB..AA....A....BB..AAA.BB..BB.B.A...B........B.....B..AA....B.A.BB.A.AB..BBB.B.B..B..B...A...B.A...AB...B.B.......A..B.....A.AA.BAB....A."

Returns: "BABABABABABABBAAABABABABABAABABAABABAABABABABAABABABAABAAAABABAAAABAABBABABABAABABABABAAABABAABABABABBABABAABABBABABABBABBABAAABABAABABABABABAABAABABABABABABABABAABAABABABABABABAABABABABABABAAABABABBBABABABAABABAABABABBAABAABABABAABAABABABABABABABAABABABAABAABABBABABAABABABABAABABABABABAABABAABAABAAABABABABABABABAABAAAAABAABABABABABABABAABBABABAABAABABAABABABAABBABABABABABAAABABABABAABABABABBAABABBAABABAAABABAABAABAABABABABABAAABABABABABABABABABABBBABABABABAAABAAABAABABABABAABABABABABABABAABBABABBABABABABABABAABABABABABABABABABABABABABABABAABABABAABABABAABABABABABABABABABAABAAAABABABAABAABABABABABABABABABABABABAABABABAABABABAABBAABAABABABABABABAABAABABABAABABABABAABAAABABABABABABAABABAABABABBAABABABAAAABAABAABABABABAABABABABAABAABABABABAAABABABABABABAABABAABBAAABAABBAABABABAABABAAABAAAABABABABABAABABAABAABAABABABABABABABABAABABABABAABABABBABABAABABABAAAABABAABAABAABABABABABABABABABBABABABABAABAABAABAABABAABABABABABABBABABAABAABABABABABABABAABABABAABBABABABABABAABAABAAABABABAABABABBABAABABABABAABBBAABABAABAABABABABABABABABABABAABABABABAAABABAABAABABAABABBAABABABABAABAABABAABABABABAABABAABAAABABABABAABBABABAABABABABABABABABABABABABAABABABABBAABABABAABAAABABABAABABABAAAABAABABABAAABABABAAABABBAABABABAABABAABAABABAABABABAABAABABABAABAABABABAABAAABABABABABABAABABAABABABABABABABAABABABABAABABAABABABBABABAABAAAABAAAABAABABABABABBABAAAABABABABAABBAABAAABABBABAABABABABABABABABAABABAABABABAABABABABABAABAABABBBBAABBBABAABABABABAABAABBBAABABBABABABABAABABAABABABABABABABABABAABABBBABABBBAAABABABABABABAABABAAAABABABAABABABABAABBAABBBABABABABABAABAABABABAABABABABAAAABABABABABABAABABABBABABABABABABABBABABABABABABABABAAABABABABABABABAABABABABAABAABAABABBABABABABAABABAABABABABABABABABABBABABABABABAABABAABABABABABABABABABABABABABABABABABAABABABABABAABABABABAABABABABABABABABABABAAABABAABABABABABABAABABABBABABABABABAABABABABABAABABABABABABAAABABABABABABABABABABABBBAABAAAABAABABABBBBBABABABABBABAABBABABAABABABAABABAAABABABABAABABAABAABAAABABAABAABABABABABABAABAABABABABAAABABABAABABABAABABABABABABABABAABABABAABAABABABBABABAABABAABABABBABAAAABBAABBABAABAABABABABAABABABABABAABABABAAABBAABABAABBBABABAABAABABAABAABAABABABABABABABABABAABABABABAABAAABABABABAB"
2

"...AABA.AA..B....A.A.BAABA.A.BBABBA.BB..B.B.ABB..B..AB..B.BB..A..A.....AAAAA....AAAABAAAB.AAB.BAB.B.B.AAB.A..A.BABB..A..ABA..A.B.AABB.A.BAA..AAA...BABAB..B..A.AB.BA.AAB.B.B..AABBA.BAB..AB..A..BA.B...A.B.B..B.BABBBBBB.B..AAAAABBBBBBA...BA..A.BBB.B.ABBA.B...AB.B....BA.....BA....AAA.BB..AA.B.BAA.AAB..AAA.A.B..B.BAAB.AB.B.A.ABB..ABBA.A.AB..B.A.ABB...BBBAAA.BABAA..B..B.AABB..A.BABBBABBAA...BBB...B....AA.BB....B.A.AB.B.A.BB..A.B...ABBBB.BAABA..ABB.AAA...A.B.A.AA....ABAB..B...BBBBBB.BB...BA.B..AA.B...BA...B.A...A...A.BB..AA.AA..B.B...ABBBB.B.BBA.A.BA.BA.B.A..B.A.B.BB..AAB..BAB.AB.AB.A.BAA.BB..B.AA.A.ABBABBBABB.BBABA.B.AAA.A.BAAABA.BBBAAA.B.A.AB..BBA.AABBBA..AB.....B.A..AAA...A.....AB.B...BA.ABBBBBB.BBA.AB...AA.....B.A.BBB...AB.BB....A..B...BA..B.AAA.BBBB.B...AB.A..AAA.B.BA.BA.ABAB.ABA.ABA.ABB.A.B....B.BB...BABAABBA.BBBB..AAAB.BA.AA.B..B......A..B....A.AB...A..A.B.AA.AABBBBB..BBA.BBA..ABBAA..A.A......AA.BAB.AA...B.A.B.BAABBAAB..BA.B.BBB..AA..ABAAABAA....BAB.A..B.B.BB.B...AB.B.BBB.BA.AA...B....A.B.A....BAABB.BAB..BBBB..B.BB..B..A...A.A.....A.BBA.AA..BB...BAA.......ABBA..BAA.BBA.B.B..ABBBA.AAA....BAAA..A.B.A...A.A...B.BAA.BA.ABBBAA..B..A..AB.AA..AAA.AA..A..A.B.B.AB.AA...BB.B.BB..BB.A..AAAAB.B.AB...B.A..A.A...BAB..BB..B.BB.A.AABBAB.BBBB...BB.AA.B.BA...AABA.BBAA.....AA.BBABBBABB.AAB.A....AAAB.A...A..ABA.ABBA.BA...AA.BA..A.AAB.BBA.B..B..AA..B..BB.B...AAAA..AAABBBA..ABAB.AB.AA..AB.AAAB...A....AAAAABB..AB.ABB..A.AABBAA.AB.A...AB........B..B.BBAB.A.B.AA.B.B.B.B....AA.BAB.BA.BB.B.B..AA.AB.BABB.BAAABB...A..AA..A.A..B..B..BBAABA...B.BB.B.B..BB.AB...A.AAB.B....AA.B.AB..B.BABB.B..AB......AAAAA..AB.BA.A..BAA.....ABABBB...A....ABA....B.BBBA..BB..A..AAAB.B.BAAAAABB.B.A.BA.BA.BBABABB..A..B.AAAA.ABAA..A.ABBBBAB..ABABBB...B.AB...BAB.ABAAABB...BAA..AA.....B..AAAA.ABB...BAA...B.AB.....A.AA..A.A.BABBB..BBBAAA.AB.A.AABB..BA..BA.A.BAB...B.A.A....BAB.AA.BBBB....A.......BBB.A.BBAAAAB..B..AB...AA.A.BB..B.B...BA....A.A.BBBBB..BBB...BB.ABBBB..A......B..ABBBA.B.....BA..A....ABA..AA.B.AA...BBAB.AA...B.AB.A.B.....AB.BA.B..AB.AAAAA....A.AA...BA.ABA....B.A.AAAA.BAB.AA..BBABA.ABB.AA.BB.AA...A..B.AABA.A.ABABA..AA...BB...BBBBBA.AA...B..ABBA...AB.BB...AAABA...A...A.BBAA.A.A.BB...A.BA.AA..BB..BB...B.BBB...B.A.BA....AAB.ABA.B.B.BB..B....ABA.B.AB.BBA.A...AAA.B...AAA..AAA...A...BA..A..A.BA.BBB..B.A...B.BA.A..AB..BAB.AA.ABA.BAAB.A..AAA.AB.BA..BAA.AB......A.BBBB.ABA.BABA.AB.AAAA.A.....ABBA.BBBB...BABAA...BA.AA"

Returns: "BABAABABAABABABABABAABAABABAABBABBAABBAABABAABBAABABABAABABBABABAABABABAAAAABABAAAAABAAABAAABABABABABAAABAABAAABABBABABAABABAAABAAABBAAABAABAAAABAABABABAABABABABABABAABABABABAABBAABABABABABABABAABABAAABABAABABABBBBBBABABAAAAABBBBBBABAABABAAABBBABAABBAABABAABABABAABABABAABABABAAAAABBABAAABABAABAABABAAABAABAABABAABAABABAABABBABABBABABABAABAABABBABABBBAAAABABAABABAABAAABBABAABABBBABBAABAABBBABABABABAAABBABAABAABABABAAABBABAABABAABBBBABAABABAABBAAAABABAABAABAABABAABABAABABABBBBBBABBABABAABABAAABABABABAABAABABABABAABBABAABAABABABABAABBBBABABBABAABAABAABAABABAAABABBABAABAABABAABAABAAABAAABBAABAAABABABBABBBABBABBABAABAAAABAABAAABAABBBAAAABAABABAABBABAABBBABAABABABABAABAAAABABABABABABABABABABABBBBBBABBABABABAAABABAABAAABBBABAABABBABABABABABABABABAAAAABBBBABABAABAABAAAAABABAABABABABAABABABABABBAAABABAABABBABABABAABBAABBBBABAAABABABAAABAABABABABABABABABABABABAABAAABAAABAABBBBBAABBAABBABAABBAABAABABABABAAAABABAAABAABAAABABAABBAABAABAABABBBABAABAABAAABAABABABABAABABABABBABABAABABABBBABABAABAABABABAABAABABABAABBABABAABBBBAABABBAABABABABABABABABAABBABAABABBABABAABABABABABBABABAAABBAABABABABBBABAAABABABAAABAAABAABABABABAABABAAABABABBBAABABABABAABAAABAAAABAABAABAAABABAABAAABAABBABABBAABBAABAAAAABABAABABABAABAABABAABABAABBAABABBAABAABBABABBBBABABBAAAABABABABAABAABBAABABABAAABBABBBABBAAABAABABAAAABAABABABAABABABBAABABABAAABABAABAABABBAABAABABAABABAABBABABAAAAABAAAABBBABAABABAABAAABAABAAAABABAABABAAAAAABBABABAABBABABAABBAABABAABABABABABABAABAABABBABAAABAAAABABABABABABAAABABABAABBABABABAABABABABBABAAABBABAABAAABAABABABAABAABBAABABAABABBABABAABBAABABAABAABABABABAAABAABAABABABBABABABABABABAAAAABAABABABABABAABABABABABBBABAABABAABABABABABBBABABBABABAAAABABABAAAAABBABAAABAABAABBABABBABABABAAAAABABAABAABABBBBABABABABBBABABAABABABABAABAAABBABABAABAAABABAABABAAAABABBABABAABAABAABABABAABAABAABAABABBBAABBBAAABABAABAABBAABABABABAABABABABAABABABABABAAAABBBBABABABABABAABBBAAABBAAAABAABABABABAAABAABBAABABABABABABAABAABBBBBAABBBABABBAABBBBABABABABABABABBBAABABABABABAABABAABABAAAABAAABAABBABAAABAABAABAAABABABAABABAABABABAAAAAABABAABAABAABABABABABABAABAAAAABABAAABABBABABABBAAAABBAAABABABABAAABABABABABABAAABAABBABABBBBBABAABAABABABBABABABABBABAAAABABABABABAABBAABABAABBABAAABABAABABBAABBABABABBBABABAAABABABAAABAABAABABABBAABABABABAABAABABBABABABAAAABABAAAABAAAABABABAABABAABAAABAABBBAABAABAABABABABAABAABABAAABABAABAABAABAAAABABABABABAABABABABABAABBBBAABAABABABABAAAAABABABABABBAABBBBABABABAABAABABAA"
2

"AA...B....A..AB...AB.A.B.A.AA.A.AA.....B.B.B.A.AA...AB....B..B....BBB.AA..A.B..A.A..A.B.BAB.AA.AAA..B..AAB..B.BB....BBB..A..AABB......B.AB..B..AB...AAAAA.B.BB.AAA..A.A.B..BABA.BA.B.BB.AABBBABABAAB..ABBBA.B.ABBAAA.B.A.B.....BA.A.BAABAB..A.BBA..ABB.B...B.B...B.A.AB.BAB.BA.A..AB.B.B.AA..AAAB...BAA.BAABB..A.A....A.BA...ABABB.BB..A......B..A.B..B..ABABA...A....B..ABABAB..BA.AA.....BB....B.A.A.AA..B...AB.AA.BB.B.B.A.B...BBA.A.AAA.BABA.B.A.B.AAAABB..A.ABA.AB.AAB.B.AA..BAA..A..AAB..A..B.AA...BAA..BAB....B...B.A...B...ABAA.AA.BBA...B....B..B..BAB.BA..AA.B..B...B..A...BA..A..A..A.A.AAA....B.AB.AA.BBAAAB.A.B...ABA..A.B..B..A.BAAA...AABA.BA.A.AA.A...A.....ABA.B.....A....A....BABABBB..B.AAA..BA..BA.......AB....A.AABBAAA....A.AB..BB..AB.B..A.B......B..A......AABB...........ABBB..A.....ABB..BB.B...B...AB.AB..A.B.AA.B....AB.A...BB...A.BAB...A.B..B...B.A.A.B...B.BAA.A.BAAAA...BBBA.A...BBA.BB.B...A.ABBB...B.B.B....A.AB.BAAAAB.B.BA...A.BBB.B.BBBB.BAB..B....B...A..BA.B.B.BAA.A...BAA.AA..B.BB..A....BA..BBB.B..A..AA.A.....A...A.......A.BB.B.A...BA....A...AB.BA...BB..B......AA.A.B.B.B..A...AA..AA.....A.....BB.B...B..B.AB.......BBB....A......B.....B..A.AA.....A...BB.A..ABA.BBA.B.A.A.B.A.A.A..AB.AABAB....B.....B...A...AA..BAAA....AB.B.B...AA...BAAB..A......B.B.A...B.AB.B.AA.BBAB.A..AB.B..........A...A..A.......BB.B...A...A..BBAABA..AAB..A..A..ABA..AA...A.....AB..BB....BB..ABA.BBA.AAB..AB.AA..BB....AA.BAA.BB.A..B..AB.B....ABBB.B...B..B.AB..BA.A...BAA...A.AB..A.B.BB..B.BA.....AB......B.AAABBBB.ABAA.A...B.A..BBB...B...BAA...AB.A.BAB..BAAA.AA..A.AAA.AB.BBAA..A.B.BA.AA.....AA......A.A.AABA.A.B...BBBA.AA...B........B.AAA.AA.AA..B..AB.....ABAA.AAAA..A.....BAAAAAB.....B.B.B.BAA..A.A.B...B.BAB..BBA.BBBAAA.ABA.A.....A.A.BA.ABBB.A.ABBA...A....B...BA.......A.A..AA...BAB..A...BAB..BBBBABAA....ABB.B.ABA....B.BBB..B...BB.B.A.B.AA..B...AABBA.B....A...A..B......BBABA..BB..A...A.AAAA.B.AA....B.......A.AA....AA.A..B...B.A.A.BAB.B.BBBBBA.BA.B..AABBBBB...AB..AB..B.BAB.BA.AA.B.........A...A..A..B.BAB....A..B.....A..B.A.AAABA..A.B.A...A.AA.BB....AA..B..B....AABAB...AB.B.......AA..A............B.AAAAA.BA....AB...AA.A....BB..AAA.BAA..B..BA....A....AAB....BABABA....A.....B.ABBB...AA...AA...BAB.."

Returns: "AABAABABABABAABABAABAAABAABAABABAABABAABABABAABAABABABABAABAABABAABBBAAABAAABABABABAAABABABAAABAAABABABAABAABABBABAABBBABABAAABBABABAABAABAABABABABAAAAAAABABBAAAABAABAABAABABAABAABABBAAABBBABABAABABABBBAABAABBAAAABAAABABABABABAABAABABABAABBABAABBABABABABABABAABABABABABABABAABABABAAABAAAABABABAAABAABBABABABABAAABABABABABBABBABABABABABABAABAABABABABABABABABABABABABABAABABAABABAABBABAABAABABAABABABAABAAAABBABABAAABABABBABABAAAABABAABAAABAAAAABBABABABABABAAABABAAABABAABAABAAABABABABAAABAABAABABABABAABABABAABAABABAABAABAAABBABAABABAABAABAABABABABAAAABAABABABABABAABABAABAABAABABAAABABABAABAAAABBAAABAAABABAABABAAABAABABAABAAABABAABAABABABAABABABABABABABAABABABAABABAABABABABABBBAABAAAABABABABABABABABABABABABAABBAAABABAABABAABBABABABABAABABABAABABABABABAAABBABABABABABAABBBABABABABABBAABBABABABABAABAABABAABAAAABABABABAABAABBABAAABABABAAABAABABABAABAABABABABAABAABAAAABAABBBABABAABBAABBABABAABABBBABABABABABABABABABAAAABABABABABAABBBABABBBBABABAABABAABABAABABAABABABAABABAABAABAABABABBABABABABABABBBABABABAAABABABABABABABABABABAABBABAABAABABABAABABABABABAABBAABABABABAABAABABABABABABAABAAABABABABABAABBABABABAABAABABABABABBBABABABABABABABABABABABAABABABABAABBAABAABAABBAABAABAABAABABABAABAAABABABAABABABABABAABABAABABAAABABAABABABABAAABAABAABABABABABABABAABAABAABABAAAABBABAABAABABABABABABABABABABAABABABAABBABABAABABABABBAABABAAABABABAABAABABAAABABABABABABAABBABAABBABABAABBABAABABABAAABABBABABAAABAAABBAABABABABABABABABBBABABABAABAABAABABABAABAABABABABABAABABBAABABABABABABABABAABAAAABBBBAABAABABAABAABABBBABABABABAABABABAAABABAABAAABAABAABAAABABABBAABAAABABABAABABABAABABABAABABAABABAABABABBBABAABAABABABABAABAAAABAABAABABABABABABAABAABAAAABAABABAABAAAAABABABABABABABAABAABAABABABABABAABBAABBBAAABABABABABABABAABABABBBAABABBABABABABABABABABABABABABABAAABAABABABABAABABAABBBBABAABABAABBABAABABABABABBBAABABABBABAAABAAABABABAAABBAABABABABABABABABABAABBABABABBABABABABAAAAABAAABABABABABABAABAABABAAABABABABABAABAABABABABBBBBAABAABABAABBBBBABAABABABAABABABABABAAABABABABABAABABABAABABABABABABABABABABAABABAABAAABABAAABAABABABAAABBABABAABABAABABABAABABABAABABABABABAAABAABABABABABABABAAAAAAABABABAABABAAABABABABBABAAAABAABABAABABABAABABAAABABAABABABABABAABABAABAABBBABAAABABAABAABABAB"
2

".BB.ABBB..A.B...BAB.ABB..AB.B........BBA.AA..BAB......B.A.B...A.AA.........A.B..B....A...B.AA.B.AB..B..AABB.AB.AA..BA..A.B.B..B...B..A..BB.BABA.A....A..BB.B.B...A.A..B....BB....B.B..A..BBAA..B..A.BA....A..A.B....B..BA.A.A.A.A.A..A.A.A..A..AAA.A..BBBBA.A.A.BBB..A.B.BB...AAA..B..A..BAB....B.B.BB.B.B....B..AAAA.B.B..BB..A.A..............A..B.A.B..BB..B..A....B.AB.A.....AB.B...AAAABBB.B....AB....A..........B..B.B..A..AB.BB...BA...BA....B.B.AB.BA.AB.A....AA..AA..A....BA.BA..B......A...B....AA.BA...BAAA..A..AB.A.BAA...AB.B....B...AAA.A..B..A...A..B...A.B.AB..A.B.A.AAAABBBBA..A.A..B.BBAA..B......A.A..A.AB.BB...AA....A...ABBABA.......A.BA..BABBA...BAABBA..AB....AB....AA.B.......A.AAB....BB..A.BBABBAAA.A.AAA.B......AA.BABAABBBB.........BA...B...B..BB.BBAB..BAB..AB..AA...B.B..BA.....BA.B....BBA........BA.A...A...AB..BA.A.A.ABA.A..AB.B..BB...ABA..B..A.....A...BAB....ABB..B....BAB.B....AB...B...BA..AABAB......A.AA..ABAA....BBBA....BA...A.BBA...B....A..BB..AB..AB.....A...B.AA..B....B..A.A...ABB...B..A.B.BBA.A...ABBBAB....B.A..A.A...A..A.AABA..A.AA..B.BA..A..B.A....B..AAB.B..B.BA...A..B.AB..A....BAB...BBAB......B..A.B.....AA....BAB.....AA.A..BAA.BB.....B.BA...B...BBA..A...A..BBAAB..BB..A.B.....BBB..BBA..BB...BB...BA.A.BB.AAAB.B.AA.A...AAB.A.ABB.......A.BA.B.AB..BBBA.AAB.B....A.A..A.B.BABA..B...BA.A.AA..BBA....A..AB...B..AAB.A....B....BAAABB.BA.A.A...A.BB..BBB.AB..B....B....A.BAA.ABABA..B.....BBA.B..A.A...AB.B...A...B..B..A......B.B.B.AA....A.....BB...AA.A.ABBA.BB.A.B.......A.B..B.AA...BAA...B.ABAABAB.A.BA...BBAA.AA.BAAA...BAABA.BA...B....BB..A..B.ABBBB..B.AB..B.B.B..AB......AB.A...A...A.BB.A.AA....BABA..A...B.A.ABAA....BA...........A..A....A.AB.AA.B.AB..A......B.A.B.B.A.B.B.BABAB..AA.....B.A..BB...B.ABBBA.ABA..BAABAA..ABA.BAB.AA...B.BB.ABBA....BB..AA.A.BA.....B..A.B.AA....AA...BA....B............A...AA...BB.AB....A.BB..AB..ABB.B....A...A...A.A.BB..ABABB..BA.AA.AA....B.A...B.A.B...B.A..BAAAA.B...B.A...AA.B..ABB..BAAAA.BBBAB.B......A.A..B.B.BA..AAAA.ABB..BB..AB..AB.ABB..AAABAB.BBBABABA.....A......B..ABB....B.A......B.ABBA.A....BAB....AA....A..B.........ABA....ABBA.BB...ABB..B..B..ABAB.A..B..BAB.B..B.AA.A.......A.....A...AA..B...B.BA.A...B...A......A..AA.A.B.AAAABA.BBABB...B.....A...BAAA.A.......B.BA.ABABB.B.AABB.B.B...AA...BB.."

Returns: "ABBAABBBABAABABABABAABBABABABABABABAABBABAABABABABABAABAAABABAABAABABABABABAABAABABABABAABAAAABAABAABABAABBAABAAABABABAAABABAABABABABABABBABABABABABAABABBABABABAABABABABAABBABAABABABABABBAABABABAABABABAABAAABABAABAABABABABABABABAABABABAABAAAABABABBBBABABAABBBABAABABBABAAAABABABABABABABAABABABBABABABAABABAAAAABABAABBABABABABABABABABABAABABAAABAABBAABABABABABAABAABABABABABABAAAAABBBABABABABABABABABABABABABAABABABABAABABBABABABAABABABABABAABABABABAABABAAABAAABAABABABAABABABABABABABAABABABAAABABAABAAABAABAABAAABAABABABABABAABABAAAABABABABABABABABABAAABAABABAABAABAAAABBBBABAABABABABBAABABABABABABABAABABABBABAAABABAABABABBABABABABABAABABABABBABAABAABBABAABABABABABABAAABABABABAABAABABAABBABAABBABBAAABABAAAABABABABAAABABAABBBBABABABABABABAABABABAABBABBABAABABABABABAABAABABAABABABAABAABABAABBABABABABABABABABABABABAABABABABABABABAABABAABBABAABABABABABABABABAABABABABABBAABABAABABABABABABABABABABABAAABABABABABABAABAABAABABABBBABABABABABAABBABAABABABABABBABABABABABABAABAABAAABABABAABABABABABABBABABABAABABBABABABABBBABABAABAABAABABABABAABAABABAABAABABABABAABABAABABABABAABABAABABABABABABAABABABABABABABABBABABABAABABAABABABAAABABABABABABAAABABABAAABBABABABABABAABABABBABAABABABABBAABAABBABAABABABABBBAABBABABBABABBABABABAABBAAAABABAAABABABAABAABABBABABABAAABAABAABAABBBABAABABABABABABAAABABABABABABABABABAABABBABABAABAABABABABAABAABABABABAABAAABBABABABABABAABBAABBBAABAABABAABABABAABAABABABABABABABABBAABABABABABABABABAABAABAABABABABABABABABAAABABAABABAABBABAAABABABBAABBAAABABABABAAABAABAAABAABAABAABAABAABABAAABABAABBAABAAABAAABAABAABAABABAABABAABBABABABAABBBBAABAABAABABABABABABABABABAABABABABAABBAABAABABABABABAABAABAABABAABABABABABABABABABABAABABAABABAAAABAABABABABABABAAABABAAABABABABABABAABABAABAABABBABABAABBBABABABABAABAABAABAABABAAABAABABBAABBABABABBABAABAABABABAABABAABAAABABAAABAABABABABABABABABABABABABAABAABBAABABABAABBABABABABBABABABABABABABABAABBABABABBAABABAABAABABABAABAABAAABABABAABABAAAAABABABAABABAAABABABBAABAAAAABBBABABABABABABABABABABABAAAAABABBAABBABABABABAABBABAAABABABBBABABABABABABABABABABABBABAABAABABABABAABBABABABABABABABAABABAABABABABABABAABABABAABBAABBABAABBAABAABABABABAABABAABABABAABAAABABABABABABABABABABAABABABABABABABAABABAABABABAABAAABAABAAAAABAABBABBABABABABAABAABAAABABABABAABABABABABBABAAABBABABABAAABAABBAB"
2

".AAAAAABAABBBBAB.A.AAAABAA.BA.B.AABABAA..BBB.BA..BAAA.B.AAAABA.A...BABA.A.AA...BBBAAB.AABB..B.BBB.ABABA...B.AA.A...BBB.ABB..B....BAAB.BBAB..A.ABBB.A.A..BB.A..BB.ABAABBA.AAB..BABBA..AA.AB..A..BB...BBAA.B.BABBB.AABAAABA.B..ABAA.BBAB.B.ABB.AB..B..A.B.AA.A.AABA.BBABBA.AABA.B.BBBAAA.B.BAB.A..AA.BABBAB.AAB.AABB..ABBABBABABBBA.BBBB....AA..ABAAAB.A.B...A.BBB..ABA..ABABA.B....AB.....BBBB.AB.BBABB.AA.BBBBB.ABAAAB.BBBA..BB.BA..AAABABBBA..B.BAABB..BBAAAAAABA....AB.AABBBA.B.B..AAA.AABBBA.AB.BBBABA.AABA..ABB..B.BBBBA.BB.A....BBABBBBB.B.B.A.BAAAB..AA.B.B.BBBA..AB...ABBBBAABAAABAAA.B.AB....B.BBBB.AA.A..A.A..BA.AB.AABBAB.AAAAAAABAABBABB..A..ABABAAAA..AAB..B..ABAAAAA.ABAAAA.BBABB..A.A..BBBB.A.A.A...BAABB..AB..B..BAAA..A..B...ABA.A.BAABAAB..B...BBAB.BA..BAB.B.BABBAAAABBA..BBAAAA...A..BB.BA..AAA.A.BA.A..BBABBB..B.A.A...A.BAA.BB..ABA.AAABBAB.BABBBAAB.BBB.B.BBBA..AAAA.BAB.A.BB..AAABABBB..AAABBAABBAAAB..BA..BBB..ABBAABABA....BAA..BBBBBAABB.B..B.AA.AABBB.BBB.A.A.B.B...ABABA.B..ABBA.B.BAAAB.A.BB.ABB.ABAA.BABBBAA.ABAABBBAB..BB.BBAAA..B..ABA...ABAB.AAA.BB.AB...A.BAAB.AA..B.BBABAAAA.A.BABBA..BBB..B..B.BBABBA.B..ABAB..A..B..BBABAB...BA..AABB..AAAB.AAB.BB.B....ABA...B..BBA.AA.BAAAABB.B..B.A.B..A.A.....AAABBAA.AAA.BA.B.BBB.A.A...BB.BBBA...B.B.BBBABBAA...BBBB.B..BB.B..AABAAB..AB.AA.B..BB.B.AB..AABB.BB.BA.BBAAABBA.BAABB.A.ABAB.B.A.ABA..BBA..ABAAABAAAB.AAAA.A.AABBB...A.AB.A..BBBB..ABABAABAA..BBB...A.BBAAA..AAA.BB.A.ABB.ABAA..A.BAAAABB..BBB.B.BAB..A.AB...B..BB.A..B.BBBB.B.AA.BABAB.ABBABABBAAABABABBBAB..A.ABBAAB.AAA..B..A.A..AAA.ABA.A.BABBBB.ABABABA.BAABBBBBA...AAAABAABAA..A..B.B..ABABA..ABAAB..B.BA.B.B....BA.B.B.ABAAB.B..AB.BBBBA.BAB.ABAA..BB.BBBAAAAA.BBBBAB.B.A.BBAAABBA.A...AAA......ABB..B.A..AAABBAB.B...A.BAB..ABABBABBAA.BAAB.BABABAAA..B...ABA.BAA.B.AAB.A.ABBB.B.A.ABABA....B.A..A.BBB.BB.B....BAAAAAA.AB...AAB..BBAAABA.BB....ABAB.A..AAA.BBAAAB..B.AAAAAA.A.AAABABB.BA.BB.AAAAAAAAA.BA..B.BBABBABAB..BA.ABA.A.BBA.ABA...ABABB.ABABAAA.AAA..ABB..A...AABBBBA.BBBBBBA.BBBA.B.AAAAABA..A.BB..B..AAAB.BABAB.AA.BB.BAA.A.B.A..B...BAB.A..A.BBAB...BAB.A.AAB.BBBBBBBAA.AB.BBAABBAA.A..BBAA.BAB......BBBB..A.BAA.A..B.AB..A..ABA.BA.BA..BB.BBB..AAB.BB..BAABB.A..AAB.BBABBABBA..BBB.AAABB.BAB.AB.BBAAABA....BAABBAAB...BABA.AAABBBABB.AAB..BABBAAAA.ABA..BB..AA..AABBABBA.BB.ABAAAA.A"

Returns: "BAAAAAABAABBBBABAABAAAABAAABAABAAABABAABABBBABABABAAAABAAAAABABABAABABABABAABAABBBAABAAABBAABABBBAABABABAABAAABABAABBBAABBAABABAABAABABBABABABABBBAABABABBAABABBAABAABBABAABAABABBABAAABABABABABBABABBAAABABABBBAAABAAABAABABABAAABBABABAABBAABAABABAABAAABABAABAABBABBABAABAABABBBAAAABABABAABAAAABABBABAAABAAABBABABBABBABABBBAABBBBABABAABAABAAABAAABABAAABBBABABABAABABAABABABABABABABBBBAABABBABBAAAABBBBBAABAAABABBBABABBABABAAAABABBBABABABAABBAABBAAAAAABABABAABAAABBBAABABABAAABAABBBABABABBBABABAABABAABBAABABBBBAABBAABABABBABBBBBABABAAABAAABABAAABABABBBABAABABAABBBBAABAAABAAAABAABABAABABBBBAAABABAABABABABABAAABBABAAAAAAAABAABBABBABABAABABAAAABAAABAABABABAAAAABABAAAAABBABBABABABABBBBAABABABAABAABBABABAABAABAAABAABABABAABABAABAABAABAABABABBABABABABABABABABBAAAABBABABBAAAABABABABBABABAAAABAABABABABBABBBAABAABABABAABAAABBABABABAAABBABABABBBAABABBBABABBBABAAAAAABABAAABBABAAABABBBABAAABBAABBAAABAABABABBBABABBAABABABABABAABABBBBBAABBABAABAAABAABBBABBBAABAABABABAABABAABABABBAABABAAABAAABBAABBAABAAABABBBAABABAABBBABAABBABBAAABABABABABABABABAAAAABBAABABAAABAABAAABABABBABAAAABAABABBABABBBAABAABABBABBAABABABABABABABAABBABABABABABAAABBABAAABAAABABBABABABABABAABAABBABAAABAAAABBABAABAAABABABABABABAAABBAABAAAABAABABBBAABABAABBABBBABAABABABBBABBAABAABBBBABAABBABABAABAABABABAAAABAABBABAABABAABBABBABAABBAAABBAABAABBAABABABABAABABABABBABAABAAABAAABAAAAABABAABBBABAABABAABABBBBABABABAABAABABBBABAAABBAAABAAAAABBAABABBAABAABAAABAAAABBAABBBABABABABABABABABAABBAABABABBBBABAAAABABABAABBABABBAAABABABBBABABABABBAABAAAABABABABABAAAABABABAABABBBBAABABABAABAABBBBBABABAAAABAABAABAABABABABABABABAABAABAABABAABABABAABAABABAABAABABABABABBBBAABABAABAABABBABBBAAAAAABBBBABABAAABBAAABBABABABAAABABABAABBAABAABAAAABBABABABAAABABABABABBABBAAABAABABABABAAABABABAABAABAAABAAABAABABBBABAABABABABABABAABAAABBBABBABABAABAAAAAABABABAAABAABBAAABAABBABABABABAABAAAAABBAAABAABAAAAAAABABAAABABBABAABBAAAAAAAAAAABABABABBABBABABAABABABABAABBABABABABABABBAABABAAABAAABAABBABABABAABBBBAABBBBBBAABBBAABAAAAAABABAAABBAABABAAABABABABAAAABBABAABAABAABABABABABAABAAABBABABABABAABAABABBBBBBBAABABABBAABBAABABABBAAABABABABAABBBBABAABAABABABAABABABAABAABAABABABBABBBABAABABBAABAABBAABAAABABBABBABBABABBBAAAABBABABAABABBAAABABABABAABBAABABABABABAAABBBABBAAABAABABBAAAABABABABBABAABAAABBABBAABBAABAAAABA"
2

"...B.A.AAAA..BBA..BA.A...B..BBB..A.AAA.AA..BAB.BBBAAB.A.B..BB.B.B..B.BA.ABA.A....A.A...AB....AABAB.A.B...AB.B.B.B.AA.B.BAAA...B..B.BB..A..B..A...BB.....BAB.BA.BABA.B.B...BABAB..BB.BBA..ABB....A.B.....A.BAB..B..A.BABB.BBA...A...BBA.A.BA..BBA.B.AA..A..B..ABA....B..A.....A.BABA..A.BAAB..B...ABBABB..BB.ABABBA...B.A.B.AA.AA..AB...BB.B.B.BB.....AB.BAB...BA.B..A...B.A...B..BBB.B...BB.BBBB..A.A.A.B..B.B...BBBA.....B.A..A..B.A....AB.A.B......A...BAAB..AA.BBB...A....BAB.A.AA.AAAAB.AB...B.B..BBB.....A..B.BBB..A.ABBA.B.BB..BB.A...ABA...B.A.A..B.AAB.BAB.A.A..A..B..A.BABAA.BB.....ABBBA..AABAABB...AB.A.A.A..B.BA...B..A.AAA.B.A...B.BAB.B.BA...A....B...BABAA..B.AAA..A.....AAB..A.ABBA....AB...ABBBAABA...ABA...A.AA.A...BB.B...A.B.B.B...B..A.AAA..A...A...A.......A.B.A.B.AA.ABAABABB....BAABBA.BB..A.B....BABB..A.A...A.A.AB...AA..BB...BABBAAAB.BA.BBA...B...ABA..B.A.AB.A.AA..ABA.BB..AB.BA.B...ABBA.AB.......ABA.AB..B...AAB.B..B.B.A...AAA.A.BB.BBAAA....BAA...AB...B.ABA...A.AB.AAAA.B...ABB..AB.AB.B.B....B.B....BAB..BAA....A.AA.B.AB...A.......B..A.AB.BAA..B.A...B.BA..B.BA..BA.A.BA...B....AAA.B....A.B.B..BB..AA.AABB.AAAAA...A.A.A..A..B.AA.A.B...ABBB.BAA..AA......AB.B..B.B.A....AAAAB...B.B.BAAA......BA..BAB...B.AA.BB.BBB...B..BAB.B.B...B.B.BBAB.BB..BBBBB.B.A.A.A..B....A.BA....A....AB..A.B...B.B..BB.BB.B.B.B..B...B....A.........B.BA.A.B...BAABA.BBBB..BA..A.BA.B.B.B......BA..A..BB...A.A.ABAA..A.A...AB.BA..BB..ABB.AB..B.BBBA.B......AB..B..B..BBBAA.B...B..BAB...A.BA..B.AA..AA.A...A.BBA.A.BA.BABA..A..BAAB.A..A..AAABB..A.....B.A..BB......B.A.BA.BBBA.AA.......A.BB....A.........BA.A.B.A.BB..B...BA.A.....A..AB.A..AB...BB....B..A...BB.A.A..B..A.B..A......ABBABA.AABB..A.......B.BABA.B....B..B.BB.ABA..A...A.BA.ABBA...AAAA..BAAB.B...........BAA...A.BA.AA....B.B.B.A.......B.B.A..A..ABB....BBABA...AA.B.BB.B....A..ABAAAA...A.BB.AAB..A.AB...AAA....A....A.B.B.B.A...A.AB...BA....B.A.A...B..B..A.BAB........B....B....A.ABB........B..A..ABB..AAA.A.B....A.A.A......BBB....B....AB.A..AAB...A.BA.B.AB.AA.BBB..ABBAAABB.BBAB..AB.AB..BA.B.B.B.BBABB.BAAB.BB.B.....BA.ABAB.BA..A...AA.BB...AB.ABBBA..."

Returns: "ABABAABAAAABABBABABABABAABAABBBABABAAABAABABABABBBAABAAABAABBABABAABABABABABABABAABABABABABABAABABAAABABAABABABABAAAABABAAABAABAABABBABABABABABAABBABABABABABAABABAABABABABABABAABBABBABAABBABABAABABABAAABABAABABAABABBABBABABABAABBABAABABABBAABAAABAABABABABABABABABABABABAABABABAAABAABAABABAABBABBAABBAABABBABAABAAABAAABAABAABABABBABABABBABABAABABABABABAABABABAABAABAABAABBBABABABBABBBBABABABAABAABABABABBBABABAABAABAABABAABABAABAAABABABABABAABAABABAAABBBABAABABABABAABAABAAAABAABABABABAABBBABABAABABABBBABABABBAABABBAABBAABABABABAABAABABABAAABABABAABABAABABABAABABAAABBABABAABBBABAAABAABBABAABAABABABABABABAABABABAAAABAABAABABABABABABABABABABABABABAABABAAAABAABABABAABABABABBABABAABABAABBBAABABABABABABABAABABAABBABABAAABABABABABABABAAABAABABABABABABABABAABAAABAAABABAABABBABAABAABBAABBABAABABAABABBABABABABABABABABAAABABBABABABBAAABABAABBABAABABAABABABAABABAABAABAABAABBABABABAABABAABBABABABABABAABABABAABABAAABABAABABAABABAAABAABBABBAAABABABAABABABABABAABABABABABAAAAAABABAABBABABAABABABABAABABABAABABAABAABABAABAAABAABABAABABABAABABABABABAABABAABAABABABABABABABABAABABAABABABAAAABABABAABABAABBABAABAABBAAAAAABABABABABAABABAAABAABABAABBBABAABAAABABABAABABAABABAABABAAAAABABABABABAAABABABABABABABABABAAAABBABBBABABAABABABABABABABABBABABBAABBBBBABAABABABABABABAABABABAABABAABABAABABABABAABBABBABABABAABABABABABABABABABAABABABAABABABAABAABBBBAABABAAABAABABABABABAABABAABABBABAABABABAABAABABABABABABABBABABBAABAABABBBAABABABABABAABAABAABBBAAABABABAABABABAAABABABAAABAAABABABAABBABAABAABABABAABABAABAABAABAAAABBABABABAABAABABBABABAABAAABAABBBABAABABABABAABBABABABABABABAABABAABAAABBAABABABABABABABABAABAABAABABABBABAABABABAABBAABABABABAABABABABABAABBABABAABBABABABABAABABABAABABAABAABABBAABABAABABAABABABBABABAAAABABAABABABABABABABABAABABAABABAABABABABABAABABABAABABAABAABAABBABAABBABABABAAABABBABABABABAABAAAABABAABBAAABABABABABAAAABABAABABAAABABABAABABABABABABABABABAABABAABAABABAABABABABABAABABAABABABABABBABABABAABABABAABBABAAABAABABABABABABABABABBBABAABABABABAABAAABABAAABAABAABAAAABBBABABBAAABBABBABABABAABAABAABABABABBABBABAABABBABABABABABABABABABAABABAAABBABAABAABBBABAB"
2

"B.B...BB..BBB..B.....BBB..A...A..ABA..AB..AB..B.AB....B.BA..B.B.BA.B.ABA..BAAA.B.BA..A....AAA.A..AB....BAB.....BB.A.A.B..AB..A..........BBA.A....ABB.B.BA..A..B..A..BB.BAB...BA.AABBBAABA....AA...B.B..B.B.BBBA.BBBA.A.B...A....ABA.A.....BB.A.BA.AB.B.......BABB.B.B..A.AA..AB.BB.AAB....B..B..ABB........A...........BA..BA.BBBAA..B..ABAA..A.A..B.AA.A.B.A.........B...BA...ABB.AB.B..ABA.A..BA..AA..A..B..AB......A..BA....BA....AA..BB.BA.AA.AABB..B.B.BA.BBBB...........BBA..B...BA...B..B..A..A.A..ABA.ABB....A.ABBB...AA...BAA.....A.A.BA.BA..A..B..BBB..A..AA.BA.A.A...A.B...AA.......AB..AB....A.BABB..B..B.....BABAB....BB..AB..........A...A.BAB.B.BA.AAB..A..BABAA....AB..A.B.B....ABB..A..A..BBA..B.ABBA...A....A...AB.BAA.A.A.......BA...AB.B.B...BBBAA.ABBAABA.BBAA..AA.AABA.BA.B.BA..BBB.A.BAB...AA..B..BAA..AA......AA.B.A.A..AAA..A...B.B.A.AA.ABAB.B..B.A..BA.BBB..BBB.B.BB..A.B..AAA.BA.BBB.A.A.A..A..A.AAB.AABBB....AB....B....BB.A..AB..BABBBA.B..BA..BAA.BA.BA.ABBB..ABA..AAA...BB.BABB.AA.BB....A.AA......BB..AB...AABA.AA.ABB..B....AAA.B....B..A...A.B..A.B....AABBAB.B....AA..B..BBAB..B...AAAAAABB...ABA..AABB..A..ABA........ABBA....ABB...AA..A..ABBB.A.B.BBA....BA.BB.B.BAAAB.A.BA..BA.AAB.A...A.A.BB.AB.B.....BA..BABB.A......A..AA..A.B...A..A.B..B.B.A.....A..B.BB..BBA..B..AB..ABB..........BAB.AAABBA.B.AB....BA....BA.B....A.BBA...BA.B.B.....A.AAA.B.AA.......A.....B.BB.B.A...A.A.AAA..B.B..AB.B.A..A...A.B..BA.AA.BBA.....B...B...BBAB.BAA....B.B.B..A.B..AA.AAA...BA.AAAA.AB.B.BA....B.ABA.A.AB..B..AA........ABB.B.......A..BBB.B.ABB..A..BA.A..ABBB...AAAA..AA.BB.ABBAAB....BBB.A.B.B...A....AB.A.B...BBAA.A.A..A.ABB..AAA.B.AB.B.BAAB.A.AB..BAABA...A.....B.....ABBBA..A.BA....BB.A..BA...AA..AAB.A..ABBAABBB..AA.....ABBB..BB....AA.A..A..B...B....BA..B...ABB..AAB..BB.AAAB.A.A.......B....B..A.B.....AB...A....BA.B.ABBA..ABB.BA.B..A...B.A.B.A..AB.A..BAB..A.BB.AB.B.A.ABBA.ABABBAA.BB..AAABAA....AAA.B....A...BB....B...AAA.AB.ABB.ABB.B..B......BABA.ABA..AA.A......A......ABB...BA.A.A.AB.....AAAB...BAB...............BB..AB...A..AB....A...BAAA...........A.B.A.BB..ABBABBB..A..BAB...B...A..B.A.A.AABB.A....A.AB..A.....AB.B.B.A.ABBA.ABB.A.AA..BBBAB.AB..B.A.B"

Returns: "BABABABBAABBBAABABABABBBABABABABAABABAABABABAABAABABAABABABABABABAABAABABABAAAABABABAABABAAAABABAABABAABABABABABBAABAABABABABABABABABABABBABABABAABBABABABAABABABABABBABABABABABAABBBAABABABAAABAABABAABABABBBAABBBABAABABAABABAABABABABAABBAAABABABABABABABABABBABABABABAABAABABBAAABABAABAABABABBABABABABABABABABABAABABABAABBBAABABABABAABAABABABAAABAABAABABABABAABABABABABABBAABABABABABABABABAAABAABABABABABABABABABABABABABABAAABABBABABAABAABBAABABABAABBBBABABABABABABBABABABABABAABAABABABAABABAABABABBABABABABBBABAAABAABAABABABABAABAABABAABABAABBBABABAAAABABABABABAABABAAABABABABABABABABABAABABBAABAABABABABABABABAABBABABABABABABABABABAABABABABABAABABABABABAABABAABABAABABABABABBABABAABABBABABAABBABABABABAABABABABAABABABABABAABABABABABABABABBBAABABBAABAABBAABAAABAABAABAABABABABBBAAABABABAAABABAABAABAAABABABAAAABAABABAAAABAABAABABAABAABABABABAABAABABAABBBAABBBABABBABAABABAAAABAABBBAABABABAABAABAABAAABBBABABABABAABABAABBAABAABAABABBBAABAABABABAAABAABABABBBABABABAAAABAABBABABBAAAABBABABABAABABABABBABABABAAABABAABABBAABABABAAAABABAABABABABAABABAABABABAABBABABABABAABABAABBABAABABAAAAAAABBABAABABAAABBABABAABABABABABAABBABABAABBABAAABAABAABBBAAABABBABABABAABBABABAAABAAABABABABAABAABABABAABBAABABABABABABABABBAABABABAABAAABAAABABAABAAABAABABAABABABABABABBAABBABABABABABABBABABABABAABABAAAABBAABAABABAABABABABAABABABAABBABAABAABABABABAABAAAABAAABABABABABABAABABBABAABABABABAAABABABABABABAABAABABAABAABABAAABBABABAABABABABABBABABAABABABABABABAABABAABAAABAABABAAAABABABABABABABAABABABABAABABAABABABABAABBABABABABAABABBBABAABBABABABABABAABBBABAAAAABAAAABBAABBAABABAABBBAAABABABAABABAABAAABABABBAABABABAABABBABAAAABAABABABAABAABABAABAABABABABABAABABABAABBBABAAABABABABBAABABABABAABAAABAABAABBAABBBABAABABABABBBAABBABABAABABAABABABABABAABABABABAABBABAABAABBAAAABAABABABABAABABAABABAABABABAABABAABABABAABAABBABAABBABAABABABAABAAABAABAABAABABABABAABBAABABAABABBABABABBAAABBABAAABAABABAAAAABABABABAABBABAABABAAAABABAABBAABBABAABABABAABABABABABAAABABABABAABABABAABBABABABABABABABABAAAABABABABABABABABABABABABBABABABAABAABABABABAABAAABABABABABABAABAAABBABABBABBBABABABABABABABAABABAABABAABBAABABAABABABABABABABABABAABABBABABBAABAABABBBABAABAABAAAB"
2

"BABBBBAAAABABBAABBB.AAAAABAABBBABBABAAABAAAAABAAABABAAB.BAAABAAABABAAAABABABBBBAAABBABBAAAABBBAAABBBAABBAABABABBAAAAAAABBAABAABAAAABBBABAABBABBAABABBBABBAABAABAABBBBBBAABAABBBAABBABAABBABABBABBABBBBA.ABAABAABABAABABBAABBABBBBBABBABABABAAABBABAABB.AABBAAABAABBBABABBABAAAAAABBAAAAAAABA.AAABABAABA.ABBAAA..BBBABBBAABBBAA.AAAABABBA.AAAAB.BAAAAAABA.BABABBBBAAABBABBBABAABBBBABB.BABAABBAAAAABAABAAAABBBBAAAABB.BABBABAAABAABBAABBABABABAAAAABABAABAAABAABABAAABAAAAAABBBBAB.AAABAAABBBABBAABBBABBB.BBBABBBABBBABBBABAABABAAAABBAABAABABBABAAABAABAABBBBBBABABAAABBABA.BBABBBBBBBABBAABABBAABB.AAABBAABABABBBAABAABAAABABAABABB.AAABAABBAAAABABBBABA.BABABAAABBABBABAAABBABAAABBBAB.AAABABAABAABBABBAAABBBBAAAAABBA.B.AAAAAAABBBAABABAA.ABBABABAAB.AABB.BBAAABABAABABBBBAABBABAAABA.BBBBABBABBBBABABBABBBBBABB.BBBAAABAABAABABBABAABBBABA.BBBAABABABBABAABBBAABAAABBBBABABBAABAAAABBBAABBABBABAAAAAB.AABAABBBBBBBABBABBAAABBABBBBAAAAAABBBABB.BAABABBBAAB.BAABABAABAABBBBBBBABAABAABAABBAABAAABAAABBABBBBAABBABBBBABABBBAABBABABB.AABABAA.ABBB.BAABABABABBAB.ABBAABBBAABBBABABBAAABAABBABAAAAABBAABBABAAAABB.BABAAAAAAABBABABB.ABBBBABAABBBBBABBABBBBBBBAABABBAAAAAABA.AABAAA.BABABBABBA.A.BBAAABBBABBB.BBBBAAAAAAABBAAAABBABBBBBABBBABBBABBBABBABA.AAB.BABABABBBBBAABAAAAABABAAAAA.BABBBB.BAAABAABBBAABBBABBBAABBAABABBAAAABABBB.BAAABAABABBBAABAABBBBBBAABAAAABABBBBABBABABBBBBAABAA.ABABA.AABBAAABAAAAABBAAABBBABBABBABAAAB.BAABABBB.AABBAABBAABBBABBBAAAABABBBA.AB.BAAABBBBBBABBABBBBBAA.BABABBABAAAAAA.BAABAABBAAABBBABBBABBBAABBABBABABABAAAA.BAABABAA.AABAAAAAAAABBBABAAABAAABBBABABABB.BBBBAABBABBBBBBABABABAABABAABAAABABBAAAAAAABABABABABBA.ABAABBBABAB.ABAAABBBAAAABBAABBBBBBABAAABBB.AABABAABBBABBBABBBB.ABBABAAAABBABAAAABBABAAABBBAAAAABBAABBABBBAABBAABABABAABAAABAABAAAABABAB.BBBBABBABB.AABBBAABBBABBAABBBBBABBBABBAABBBBBABAB.BAAABBBBAAABAABAAABBABBAB.BABBBBBABABAAABAABAAABABBBBBAABBAABBBABAAABAABBBABBAAAABA.ABAAABABBABAAAABBABBBBAAABBAAB.BBAAABBBBBABBBBBBAABAAAB.BAAAAA.BBAAABAABBBAABBAA.BAAAAABBAAAAABBAAAAAABAAABBBBABABBBBB.AAAABA.AAAABBAAAABBAAABABAABABABAAABABBAAABBABABAAAA.AABBAABBAAAAABAABABBBBBBBBBABBABBABAAABBBA.BABAABABABBBABBBABAABBAAABAAABBA.AAAAAAAAB.BAAB.ABBBBAABABBABAABABAABB.BBABBAABAAABABABBABAAAAAAABBBABABBAAABBBBABABBAABAABABBBAABBBBBABBBAABABBBAAAAABAABBAABABAA.BBBABBABAABBBAABBAAABBABBBBABBAABAAAABBB.BABAAABBABBABAB"

Returns: "BABBBBAAAABABBAABBBAAAAAABAABBBABBABAAABAAAAABAAABABAABABAAABAAABABAAAABABABBBBAAABBABBAAAABBBAAABBBAABBAABABABBAAAAAAABBAABAABAAAABBBABAABBABBAABABBBABBAABAABAABBBBBBAABAABBBAABBABAABBABABBABBABBBBABABAABAABABAABABBAABBABBBBBABBABABABAAABBABAABBAAABBAAABAABBBABABBABAAAAAABBAAAAAAABABAAABABAABABABBAAABABBBABBBAABBBAABAAAABABBABAAAABABAAAAAABAABABABBBBAAABBABBBABAABBBBABBABABAABBAAAAABAABAAAABBBBAAAABBABABBABAAABAABBAABBABABABAAAAABABAABAAABAABABAAABAAAAAABBBBABAAAABAAABBBABBAABBBABBBABBBABBBABBBABBBABAABABAAAABBAABAABABBABAAABAABAABBBBBBABABAAABBABAABBABBBBBBBABBAABABBAABBAAAABBAABABABBBAABAABAAABABAABABBAAAABAABBAAAABABBBABAABABABAAABBABBABAAABBABAAABBBABAAAABABAABAABBABBAAABBBBAAAAABBAABAAAAAAAABBBAABABAABABBABABAABAAABBABBAAABABAABABBBBAABBABAAABAABBBBABBABBBBABABBABBBBBABBABBBAAABAABAABABBABAABBBABAABBBAABABABBABAABBBAABAAABBBBABABBAABAAAABBBAABBABBABAAAAABAAABAABBBBBBBABBABBAAABBABBBBAAAAAABBBABBABAABABBBAABABAABABAABAABBBBBBBABAABAABAABBAABAAABAAABBABBBBAABBABBBBABABBBAABBABABBAAABABAABABBBABAABABABABBABAABBAABBBAABBBABABBAAABAABBABAAAAABBAABBABAAAABBABABAAAAAAABBABABBAABBBBABAABBBBBABBABBBBBBBAABABBAAAAAABABAABAAAABABABBABBABAABBAAABBBABBBABBBBAAAAAAABBAAAABBABBBBBABBBABBBABBBABBABABAABABABABABBBBBAABAAAAABABAAAAAABABBBBABAAABAABBBAABBBABBBAABBAABABBAAAABABBBABAAABAABABBBAABAABBBBBBAABAAAABABBBBABBABABBBBBAABAABABABABAABBAAABAAAAABBAAABBBABBABBABAAABABAABABBBAAABBAABBAABBBABBBAAAABABBBABABABAAABBBBBBABBABBBBBAAABABABBABAAAAAAABAABAABBAAABBBABBBABBBAABBABBABABABAAAAABAABABAABAABAAAAAAAABBBABAAABAAABBBABABABBABBBBAABBABBBBBBABABABAABABAABAAABABBAAAAAAABABABABABBABABAABBBABABAABAAABBBAAAABBAABBBBBBABAAABBBAAABABAABBBABBBABBBBAABBABAAAABBABAAAABBABAAABBBAAAAABBAABBABBBAABBAABABABAABAAABAABAAAABABABABBBBABBABBAAABBBAABBBABBAABBBBBABBBABBAABBBBBABABABAAABBBBAAABAABAAABBABBABABABBBBBABABAAABAABAAABABBBBBAABBAABBBABAAABAABBBABBAAAABABABAAABABBABAAAABBABBBBAAABBAABABBAAABBBBBABBBBBBAABAAABABAAAAAABBAAABAABBBAABBAAABAAAAABBAAAAABBAAAAAABAAABBBBABABBBBBAAAAABABAAAABBAAAABBAAABABAABABABAAABABBAAABBABABAAAABAABBAABBAAAAABAABABBBBBBBBBABBABBABAAABBBAABABAABABABBBABBBABAABBAAABAAABBABAAAAAAAABABAABAABBBBAABABBABAABABAABBABBABBAABAAABABABBABAAAAAAABBBABABBAAABBBBABABBAABAABABBBAABBBBBABBBAABABBBAAAAABAABBAABABAAABBBABBABAABBBAABBAAABBABBBBABBAABAAAABBBABABAAABBABBABAB"
2

"AABAAAB..ABBBBB.A.A..BAA.B..BA.AB...A....AB......A.B.AB..B...B...AA.AB..BB..A....ABA....BBB..........A.B....A.B..BB.A.BAAAAB..A..AA...A..BA.B........BB.BA...ABBAB...A.ABAA.......B......A.B......BAA..AB..ABA.A.A..AAB.BABA...AABA...BABA...B.A.A.A.BAA...B...A...ABBAAA.A..AA..B.B..B.....A......A.AAA..A.AA..A.BA.BBBAB.A..B.BA..AA..B.A..AA.B.A..A.B...............BABAB.A.B.BBA.BB.A.ABBAB..AA..BA.A.....B.BBBB.B.B.B.BBA....A..AB.B...BA...A.A..AA.AA.A.BBA..B..BBAA.B.....AA..A.B...BB.A.B..B....ABB.B.A.BABBA....A.......A.BA.ABA..A...A.A.A...AA..AB...A.A.BBB.BBA...A..AA.B........A..AABABA...A.AAB....AA.......BBA.BBA.BBB........BB.AA..AB.BAAB..BBB.BB.BBABB....A.A.BAB...BABBA..BAB..A.A.A.B.BA..A...BA..B.AA.A.B...A.A.B..AA..B.B.A.A..A.A.B...AAB.B.....A.BB.....ABB.A....AA......BB...BA........AA..ABBBA...B.A.B.A....AA..B.BBBB.......A..B....B..AB..B...ABB.B......A..AAA.B..B...A.A..ABAB..A...B..BB...ABBBABA..A.BB...B.A..A..B.ABAA.BABA....ABBA..BA......B..BA....AAA.....A.BA....B..A..B.B.....A.....A...BB..ABAB...B........BB...AA...A.A..B.AB..AA...AA...BB..A..BBA......AA..B..A.A....A....BBBAB.AA..AA...AB.B..BA.AA.AB.....B......BB.A.B...BA.....A.A.B..BBAB..AB.....A..B....B..AB........B.BB...A......B.ABB....BA..A..B..BABA.B..AA.......B..A.BBBBBB.B....B...B..B....A..A..AABAA......B...B.BAB.A......AAB..AAA..BB.AA...BA..A..A....B.BBAA..B..A...AB.B.BA.A..AA......BB...BB.B.A..AB..B.A.ABAA..B..AA....AABB....A..B..A.AB..A...AA.BA.BA...B..B.B..ABBABB..B.BBA.B..A..BB.....A..BA....BA.ABA...A...BBA....A.B..AB..A.A.BAA.......A....ABAB.BAA.A.AA.......BB.B....A..ABB...A.BBB.AA.A...BB.A....BA.....BA...A.AB.BA.B.B.....A....A..A.....AB.ABBA.B.A......AA..AA......BA....A..BB...A....A..A.A..AB..A.AB.AAA...B.A.A.A..B....AABAA...AA..B....B..A....B..AB.BA......A.A.A.AB..AAAA....AB..A.BAB......B..B..A...B...BBABAA..BA.B...A.B.B.ABAA.AA..B...AABABBA...AAAB..AB....B...B....AB....A...A..A...BA......A..A..A..BB.BB....A.BA...AB.ABBA.BAA....A.........AB....AB....A.A...BA.BBA.....AA..B..A.BAAA.B.B...A..BB..AB..BB..BA....BAABB.A...AA..B...AB....B..AB....BA.A.A.BABB..A....B.BBA..A.AB.A..ABB.......B....A....BB.....ABB.AA.A..A..A.....A.AB......A...B..AB..BB..B...A......BA..BB..AB.B....B.A..B.BABBA..B.B..A.B.BA.A...A....B..AA"

Returns: "AABAAABABABBBBBAABABABAAABAABABABABAABABAABABABABAABAABAABABABABAAABABAABBABABABAABABABABBBABABABABABAABABABAABAABBAAABAAAABABABAAABABABABAABABABABAABBABABABABBABABAABABAABABABAABABABABAABABABAABAABAABABABABABABAAABABABABABAABABAABABABAABAABABAABAABAABABAABABABBAAABABAAABABABAABABABAABABABAABAAABAABAABAAABAABBBABAABABABABAAABABAABAAAABAABAAABABABABABABABABABABABAAABABBAABBAABABBABABAABABABABABAABABBBBABABABABBABABAABAABABABABABABABABAAABAABAABBABABAABBAAABABABAAABAAABABABBAAABAABABABABBABAAABABBABABAABABABABAABABABABAABABABABABABAABAABABAABAABBBABBABABABAAAABABABABABABAAABABABABABAABABABAABABABAABBAABBAABBBABABABAABBAAABAABABAABAABBBABBABBABBABABABAABABABABABBABABABABABABAABABABAABAABABABAAABAABABAABAABABAABABABAABABAABAABABAAABABABABAAABBABABAABBAABABAAABABABABBABABABABABABAAABAABBBABAABAAABAABABAAABABABBBBABABABAABABABAABABABAABABAABBABABABABABAAAAABAABABAABABAABABABABAABAABBABAABBBABABAAABBABABAABAABABAABAAABABABABAABBABABABABABABAABABABAAAABABABAABABABABABABABABABABAABABABABAABBABABABABABABABABAABBABAAABABABABABAABABAABABAABAABBABABABBABABABAAABABABABABABAABABABBBABAAABAAABABABABAABABAABABABABABABABAABBAAABABABABABABABAABAABBABABABABABAABABABAABABABABABABAABABBABAABABABABAABBABAABABAABABAABABAABABAABABABAABABAABBBBBBABABAABABABAABABABABAABAAABAABABABABABABABABAABABABAAABABAAABABBAAABAABABAABAABABABABBAABABABABABABABABABABAAABABABABBABABBABAABAABAABAABABAABABABAABABAAABBABABABABABABABABABABAAABAABABAABAABABABABBABBAABABBAABABABABBABABAABABABABABABABABABABAABBABABAAABABABABABAABAABABABABABABAABABABAABABAABABABAABBABABABABAABBABAAABBBAAABABAABBAABABABABABAABABABABABABAABABABABAABABAABAABABABABAABBAABAABABABAAABAAABABABABABABAABABBABAABABAABAABABAABABABABAAAABAABAABABABABABABAABAABABAABABABAABABABABABABABABABABABAABABABABABAAAABABAABABAABABABABAABAABABABAABABABBABAABABAABABAAABABAABAABAABABABAAABABBABABAAABABABABAABABABABABABABABABABABAABAABABABABAABAABAABABBABBABABAABABABABAABBAABAABABAABABABABABABABABABABABABABAABAABBABABABAABABABAABAAAABABABAABABBABABAABBAABABABABAABBAABABAABABABAABABAABABABABAABABABAABABBABABABABABBABAABABAABAABBABABABABABABABABABBABABAABBAAABABAABAABABABABABABABABABAABABABAABBAABABAABABABABABABBABABABABAABAABABABABBABABABABAABABABABABABABABABAA"
2

".................B.AB..B......A................B...............................A..........................B...........B......B........B.....B.....A....BBB......B...........AB.AAB...B....A...........A...A.........B.................A.B.B.................................A..............A................A..A..............B..BB........B...................B............................................B....A......................A..BA..................A.........................B...................B.........A.B...A.............B..................B............A..........B....................A...............................A...B......A.A...........................A............A.......A....B..B..........B........B...................A.....B........B..............................AB............................B...................................................A...A.....A....A...........B..............A........B.......A.................B...........B......B..............A.A..............A...................A..........................A...A...BA......................A...............A.A........................BA....A...A...........B.....................................B................A..A...............................B..........................................A.................B......................B.A........B............................B.....B.........A........B......B......A.....A....A..........................A........................B..............B................................A...................A..A.................A............B............B.....A..........A..........B..A.....B...B.............A...........................A......A........................B....................................B.............B...............................A.B................B...................AB................A.............................B..................................................................A......A................B.................B....A.......A...B....B............................................A....B........................A...B....A.........A...BB.B...."

Returns: "ABABABABABABABABABAABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABAABABABABAABABABABABABAABABABBBABABAABABABABABABAABAAABABABABABABABABABABABABABABABABABAABABABABABABABABABAAABABABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABABABABAABAABABABABABABABABAABBABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABAABABABABABABABABABABABAABABABABABABABABABABABABAABABABABABABABABABABABABABABABAAABABAABABABABABABAABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABAABABABABAABABABABABABABABABABAABABAABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABAABABABABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABABABAABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABAABABABAABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABAABAABABABABABABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABAABABABABABABABABABAABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABAABABABAABABABABABAABABABABABABABABABAABABABABABABABABABAABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABAAABABABABABABABABAABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABAABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABAABBABABAB"
2

".B.BBB.B..BBB.BB.B.AA....A....B....AA..A.BA.A.....BAABBBA..B.B..A.BB..B.BAA.BABBA.A.BBA..AB.B....BBBA.A.BB.BA...A.BB...BAA.AABBBAAAA.BA.........A..BB.AA.B..AA..B.AAAB.B.A.BA....AA.AA.AAAABABBB.BABA......A.B.AAB..A.AB...A..BB.AA.BBA..AABB...BAB.ABA....A..AAAAAAB...AB..BBA.A.AA..BBAA....BA....A..A.BA.A.A...B.A..ABBBABAA.AAA.B...AAB.AB.BAAABAA..BB.B...BBB..B..B......AABBB..AB.BBABAAA.B.A.B.B.A.AB...A.BA..BB.B....A..ABA.A...ABA.AAB.A..AABB....BAB..A.AAAAAA.ABA.BAABA.B.B..BA..BA.BA.B......A.BA...A.BBA.......ABB.A.A.ABBBB.BAA.BBA..ABA..B.B.AAA....BA..ABB....A..ABAAB...AB.BAA.....B..AB.....ABBAB.B.ABBB..AABA.BAAB.A.BBA....A.B...B.A.BAB.BA.AAA...AA..B..BB..BB..AA.....BAB.BB...A.A.A.BA...AAB.A.A..BA.BB.....B.B.B.A.B..BBB..A.A..A.BBAB..BB.BA.BB...A...B.B.B.AA..B...AB.B.AAB.A..B...BAAABA.BB.A.AA.AA.A....BAAA....AABB.AB..ABA.AA.AA...BAABB.B...ABAB...BBAB...BB.B.AB.AAB.B...BABABBB..B....A.BB......BAAB..AAAABABB..A...BA...B.B..BB.....B...A..AB...B..AAA..BAB.AAAAABBABA.BBAA.B..BB..ABA..A..B....B..ABBA..AA....BABA...A..BA....A....B....A.BA.ABBA..B..BBBB.........AA.A.AA.BBAA..B..B.AA.B.BABB..A..BAB.A..B..AABB.BAA..A..BAA..A.A..BB.AAABB..AB.BB..B....ABA..BB.A.B.A.B..B.A...AA.B.A.ABBAAA...B.B.A.B.B.A.......BBB.BBAAB.A.B.A....B...BAAB.A.A....ABA.B....B...AA.A.A...B.....BB.B.B.A.A.A.....ABBBAA.AABBBA.BA.ABA...A..AA..BABB.BBAB..BA..B........ABAB..BB.A.B.BA....BABA..BAA..A.A...B......AAA.B....B.B.A.A..B.B..A.BAA.BB..BAB..B..B...B..A.AB..BA..BAB..BB..BABABA...A..B.....B.B.B..A.B....AA..B..BAB.AB..AB.B..BA...B.....A..BA......AA....BBAA.B.B.BAAAAA.BB.ABA..BBA..AABBBA..A.ABBB.AA..BA.B...A.A.ABBBB....BAB.BB.B.BAAB.ABAB.B.BB..B.B.ABA..A.A.AAAB.A..A.ABB.B...B.AA..AB.A..A.BA.A...A.B.BB.AA..BBBA....BA.B.A.BB.ABAB.B..BBB.BBBABB..BAA.BBB...B.B..A.AABA.BAABAB.BA.B.A..BB..BAA.A.B..BAAA..A..BBA..B..BB.ABB.BA.ABBAA...BAB.B.BA....ABABB..AB.ABBAAA..B..BA..BAAB..AABBB.B.AA.BB........B......B..BBAB.BBA.B.BAA..BAA.BAAA.AA....ABBABA...A....AA...A..AB.BBB...AABA..AABBAAB.BBBBBA.A...B.A.BAAA....A.B.B.B.BB...BB.BBA.AA.A.BA.BBA.BA..ABAB..B.B...BB...A.A.BA.BAA..BB...B...AB.B..A.B...BA..BABBA.BBBAA.A..A.A.AB.BA.A..A......A...A...B.B.AAAAA..BBB..BA.BBB.BA.AAB.BA...ABB..BB.B....B.BB.ABB...B.A..AABA.AA....A..B..B...B..B.A.A.B..AA...B....BB.ABA..B.BBBB....B..B...B....BA..BAA.B.ABAB..B.A.AAAA..BB.BB.ABAAAABA..B.B.A.BABBA.AB..B.AA.AAAA..AAABAAB..BABAA.AAB.AAA.ABAA..B.A..BAA.BBA.BABBB.AB.BAA"

Returns: "ABABBBABAABBBABBABAAABABAABABABABABAABAAABABABABAABAABBBABABABABAABBAABABAAABABBABAABBABAABABABAABBBABAABBABABABAABBABABAABAABBBAAAAABABABABABABABABBAAAABABAABABAAAABABAAABABABAAABAABAAAABABBBABABABABABAAABAAABABABABABAABABBAAAABBABAAABBABABABAABABABAABAAAAAAABABAABAABBABABAABABBAABABABABABAABAAABABABABAABAABAABBBABAABAAAABABAAABAABABAAABAABABBABABABBBAABAABABABABAABBBABABABBABAAAABAAABABAABABABAAABABABBABABABABAABABABABABABAABAABAAABBABAABABABABAAAAAABABAABAABAABABAABABABAABAABABABABAABABABAABBABABABABABBAABABABBBBABAAABBABAABABABABAAAABABABABAABBABABABAABAABABAABABAABABAABABABABABAABBABABAABBBABAABAABAABAAABBABABAAABABABAAABABABABAAABABAABABAABBAABBABAABABAABABABBABAABABAABABABAABAABABABAABBABABABABABAAABAABBBABABABAAABBABAABBABAABBABAABAABABABAAABABABAABABAAABAABABABABAAABAABBAABAABAABABABABAAABABAAABBAABABABABAABAABAABAABBABABAABABABABBABABABBABAABAAABABABABABABBBAABABABAABBABABAABAABABAAAABABBABABAABABAABABAABBABABABABAABAABABABABAAABABABAAAAAABBABAABBAAABAABBABABABAABABABAABABABBABAAABABABABABABABABABABAABABABABABAABABABBABABAABBBBABABABABAAABABAAABBAABABAABAAAABABABBABABABABAABABABAABBABAABAABABAABAABABABBAAAABBABABABBAABABABABABABBAAABAAABAABAABABAAABAABABBAAABAABABAAABABAABABABAABBBABBAABAAABAABABABABABAABAABABABAABAABABAABABAAABABABAABABABABBABABAABABABABABABBBAABAABBBAABABABABABABAAABABABBABBABAABABABABABABABABABAABBAAABABABABABABABABAABAABABAABABABABAAAABABAABABAABABABABABAABAAABBAABABAABAABABABABABABAABABABABAABBAABABABABABABABABABABABABABAABABABAABABAABABAABABABABAABABAABABABAABABABABABAAABABABBAAABABABAAAAAABBAABABABBABAAABBBABAABABBBAAABABAABABAABABABBBBABAABABABBABABAABAABABABABBAABABAABABAABABAAABAABAABABBABABABAAABAABAABAAABABABABAABABBAAABABBBABABABAABAAABBAABABABAABBBABBBABBAABAAABBBABABABABABAABAABAABABABAABAABABBAABAABAABAABAAABAABABBABABAABBAABBABABABBAABAABABABABABABAABABBABABAABBAAABABAABABABAABABAABBBABAAAABBABABABAABABABAABAABBABABBAABABAABABAAABAAABAABABAABBABABABABABAAABABABAABABBBABAAABABAAABBAABABBBBBABABAABAAABAAABABAAABABABABBABABBABBABAABAABAABBAABABAABABAABABABABBABAABAABAABAABABBABABABAABABABAABABABABABABBAABBBAABABAABABABABABABAABABABAABABABAABABAAAAAABABBBAABAABBBABABAABABABABABBAABBABABAABABBAABBABABAABAAABABAABABAABABAABABABAABAABAABABAABAABABAABBAABABABABBBBABAABAABABABABAABABABAAABAABABAABAABAAAABABBABBAABAAAABABABABAAABABBABABAABAAABAAAABAAAABAABAABABAABAABAAAABABAABABAABABAAABBAABABBBAABABAA"
2

".A....BABA..B.BB.A..B..A.AB.A.ABB.A.A.BBB.B.B.ABA..AAB..B..AB..ABBAAAA.AA.B....B....BBAAA...BBA.A.BB.B....A.B..A..BAA.BB....AABB.BB.B.AABAA.AAA..A...ABB.BAB.ABB.A....AA.BAB...A.B.A.AB.B..AB..BAA.A.ABBB.BAA..B...B..A...BBBB..BA.BB..BB..B...A..B...B.BBAB.BABAA..AA..........B.A.B.B.AAAAA.B..A..B..BBA.BB..AA.A.A..BA.ABAA..BA.B.BA.A.A.B..A.ABA.AB.ABA.BB.AA..B......AABBA.....AABA..A...BB.AA.A.BBABBA.B.B.....B.A..AB...B.AB..A..A.AA..A.AA.A.A.BB..BB...B.B....B..ABAABBABB...BA.A.A.A..BB.ABAB.B..ABA..B.A.AA.A..B.BBA.B..A.A.BB.B...A...ABA..BB.....AAB.AA.A.BAA....A.B..BB.B.BAB.B.B..B...A.ABA...A.AA.BBA.A.AB....B..B..AB.BABAA.A..AB.A...BB.A.BA...AB.AB....A.A.B.AA.B.BBA..ABAA..BBA.B.A.BBAA....BB.BA..AABAB.B...A..B.....ABA.A..B.B....BB..ABB.A.BBBAAB.A.BABABBAA.AB.AAA...BAA.A..AA.B.AABBAB.AAAB....BB.BB..BBB..BB.A..BBBA.A.BA.B.B.ABBBA...A..B.B..B.BAA......BA...A.BABBB.BB.AA...AAB..A.BBA.BBAA.BAA.A..B.AAB.A...AABA...A.AB...AAAABB.A...AB.....A.B..AB.B..B.A..AA....BA.A.BBAAABAB.ABA..BBA...BA...AB..B..AB.B.BAA...BB..ABA....B.A.BB.BBAA..B..AAB..B.B.AB..B.BA.A...BBBA..B....B...B....A.AB.A.ABAB.AB..BB.BBB.B.BB.BA.AB..AB......A....BB....BBA......BAABBBAB.B.ABA..ABA.BBBB.A..A.AA.B...B.B.B...B.BA.A.BAB..B....A..B..AB....A.AA.ABAAABB.A...A....A.A.AAA.A.BB.B..B.B..B.B....B.BB.AA.B.A.AA..A.......BAA.AA..A.BBA.B..A.AABA.A.B..AAB..BB.A.B..B.A.AA.B..A..A..A.B.ABA.ABA.BBB.A.A.BABB.BB..B.B.......A.B.....AA.A..AA.A....B.A..BB..AA.B..BB....B.B.BAAB.BAA...B.AABAA.B.AABA.A..B.A...A.AA.B.B...B.ABABBBA......BB...AA....AA....B..ABB.AAA.BBB.A...ABBB.B.A..B..B.AB......BBBA.A.A.B..A..BB.BBB...B..ABAB.BB..BB.B...A...B..BAABBBB..BBB.ABBB.B..A.BB..BBB...A..BB.BB.BAA.ABAA..ABA..A.B..B.B...B...A....AA.A...A.A..AAAABA.B....AB.BAAA.AAB..B...BBBA..BA.AA..A....BA.A..A.BA.A..B.A..BABBBAABA.B...BBB..BB.BA..B....B.A.....B...BB.B.BBA..B.AB......ABAA.B..BAAB.AA.A...BA...A.BAA.BB.BAB.....AB.B..ABA.ABB...AB.B...B...BB.AB.BABBA..ABBAB.A..ABABA.A.BB.BAAB..B.....BBBA.A.A...AAB..B..AAB...AA.BB.B.BA.ABB.AAA..A.A..A.BB..BAA.AB.BBAA..B..B..A...B.B.ABB.BA.AA.B.B..A....BA.BABABB.AB.....BA.AB.BA....A..BAA.BAAABAAA.B.BB...BBBAABAA....BA...B.A.B..BA...AABBBBABB.B.B.A.B.AB.B.A.......BA.B..A...B.AB.ABBA.AAA..AAAA..A..B...BABB.AB.B..B"

Returns: "BABABABABABABABBAABABABABABAABABBAABAABBBABABAABABAAABAABABABABABBAAAABAAABABAABABAABBAAABAABBABAABBABABABAABABABABAAABBABABAABBABBABAAABAABAAABAABABABBABABAABBAABABAAAABABABAAABAABABABABABAABAABABABBBABAABABABABABABAABBBBAABAABBAABBAABABAABABABABABBABABABAABAAABABABABABABAAABABAAAAAAABABABABAABBAABBABAABABABABABABAABABAABABABABAABABABABABABAABAABBAAABABABABABAABBABABABAABABAABAABBAAABAABBABBAABABABABABAABAABABABAABABABAABAABAABAABABAABBAABBABABABABAABABABAABBABBABABABABABABABBAABABABABABABABAABAABABABABBAABABABAABBABABAABABABABABBABABAAABAAABAABAABABAAABAABBABABABABABAABABAABABABABABAAABBABABABABAABAABABABABABAABABAABAABAABBAAABABABABAABABABABAABAAAABABBABAABAABABBAABAAABBAABABABBABABAAABABABABAABABABABAABABABABABABAABBABABBAAABBBAABAAABABABBAABABAAAABAABAABABAAAABAAABBABAAAABABAABBABBAABBBAABBAABABBBABAABAABABAABBBABABABABABAABABAABABABABABABAABABBBABBAAABABAABABAABBAABBAAABAABABABAAABAABABAABABABABABABAAAAABBAABABABABABAAABABABABAABAABAAABABABABAABBAAABABAABABABBABAABABABABAABABABABABAABAABBABABABABABAAABBABBAABABABAABAABABAABAABABABABAABBBABABABAABABABABABABABAABABABAABAABBABBBABABBABABABABABABABABABABABBABAABBABABABABAABBBABABAABABAABAABBBBAABAABAAABABABABABABABABABAABABAABABABABABABABABABABAABABAAABBAABABABABAABABAAABAABBABAABABAABABABAABABBAAAABAABAABAABABABAABAABAABAAABBAABABABAABABAABABAABAABBAAABAABAABAAABABABAABAAABAABABABAABBBAABAABABBABBAABABABABABAAABABABAAABABAAABABABABAABABBABAAABAABBABAABABABAABABAABAABAAABAAABAAABABABABAABABABAAABABABABAABABBBABABABABBABAAABABAAABABABABABBAAAAABBBAABABABBBABAABABAABAABABABAABBBABABAABABABABBABBBABABABABABABBAABBABABAABAABAABAABBBBAABBBAABBBABABAABBAABBBABAABABBABBABAABABAABAABABAAABAABABABABABAABABAAABABABABABAAAAABAABABABABABAAABAABAABABABBBABABABAABAABABABABABAAABABABABAABABABBBAABAABABABBBAABBABABABABAABAABABAABABABBABABBABABAABABABABABAAABAABAABAAABABAABABABAABAAABBABABABABAABABABABABABBABAABABABABABABBAABABABBABAABBABAABAABABABAABBABAABAABABABABBBABABABABAABAABABAABABAAAABBABABABABBAAAABAABABAAABBAABAABABABBAABABAABABABAABABAABBABABAAABABABABABABAABABABBAABABABABABABABABABAABABAAABAAABAAAABABBABABBBAABAABABABABAABAAABAABABABAABBBBABBABABAAABAABABAABABABAABAABABABAABAABAABBABAAABAAAAABAABABABABABBAABABAAB"
2

".......BAA..B.A....BA.A....BB.A..A...BB......B.B......B.A...A......B.A..BA..B...A...AB..A..A.......B.A.A..A....A......A.....B..ABB.......BB...ABB.......A.B........AA.....AA.B....B.BB........BA.....BA.BBA.....BA..BB..B.A.BA........BA.............B....B...A.B.A.B.B.A.A..............A...B.B.A...........A.B...B...AAA.AB..A.........B.........BBB..B.AB...B....A...ABA.A........A...A.A..B.............BA.B.........A..........B...A.A....B..B.......B.....B......A.B....A.........A......B..A.......BA..BB..BABB..BA..B.....B..A...BB..A.....A..B.A..B...BB.A...BB......B....A.A...B.A....A.A...BBA..A.A....AA.A.......AA..A.B.BB..B......A....AA....BBB..B..A..AB......A.........B...B...B......BA.A.A...BA..BB..A....A..AB.AA..B.B....AA............BB.......AA....AB......B...........BB...AB...AB....B..A.....A..AA.....AB..B...B.....A.AB.A...B..A....BA..A..B..B.B.B......A........A..BBBA......A..B..B...B.BBA........A..AAB............BA...BB...BB..A..A...BBB.....B...B....B............A....A.B...............ABB.....BA...A..A...BAB..B..B.A..BA...........BB......A...A...A...B.B...A.A.B..BAAB.BAB..B.......A.....B..A..A.......A...AB.B...B.....B.A......B.A......AAB...A...BA.A.....A.......BA...BA....A.B...B......B.A...............A..B......A.BB.AA..A....A....B.A.AB......B.B...AAA..A....BA............B......AA......BB.....B.B.......B....B..A.A...B..A...B.....AA.....AA..ABB....ABB................BA.AA.....B...B.B.B....BB....A.B..A.A.BB..BB..B.....AA..B......B..BBA........B..BB.BBBAB.B..AA.AA..A....B..A.....BB..A.B.B..B.........A.....B..BA.A.AAB..AABAA.AB..B.B..A.........B..A.A..A...A........A....A....A..AB..A......AB.........ABB...B.AA...ABAA...A..B.....B.B.B......A.B..A.....A....AB....A.BA.A...A...A.........BA.B..AA.AA...BA..A...ABB............A.A.A..A..A.B.......A..B..A..B..BAAB.BB..A.B.A....A..A..B.A.B...B.......A..B.....BBA......B.B..AA..A..A.B....B...A.A.A.......A..B.A...B..BB.B.B...............A..A....B....BAA..A...A.....A.A..B..B...B.....B.A.....B.B.A.A.B..B......B.........AB.AAABA.....A...A.....A...AB.BA.....B..B..A.B..A.AA..BA....B..........ABA.....BBA.B.......A.AB...B..A.....B.B....AA..A.BA...B.B.....B..BBAAB...A..A.A.B.B..............BAB.......B.A......A.BB..A.A..A.A.B...BA..A.BB.B..BA..A........B.B......A.A............AB..A.....BAA.....A....ABB............AA....A....A.AA.B.AA.A................AA..B....A.B..A............B.A.A......B.A....B....AA....B.A.A.BBB..B....B.....A.......B..BAA...B..A...B.B..A..AB..A...A"

Returns: "ABABABABAABABAABABABABABABABBAABAABAABBABABAABABABABAABAABABABABABABAABABABABABAABABABABABAABABABAABAABABAABABAABABABAABABAABABABBABABABABBABAABBABABABAAABABABABABAABABABAAABABAABABBABABABAABABABAABAABBABABAABABABBAABAAABABABABABABABABABABABABAABABAABABAAABAAABABAABABABABABABABABAABAABABAABABABABABABAABABABABAAAABABABABABABABAABABABABABABBBAABAABABABABABABABABABABABABABAABABABABABABABABABABABABAABABABABABAABABABABABABABAABABABABAABABABABABABABABABABABAABABABABABABABABABABABABABABABABAABABABBAABABBAABABABABABABABABAABBABABABABABABAABABABABBAABAABBABABAABABABABABAABAABABAABABAABBABAABABABAAABABABABABAABAAABABBAABABABABABABAAABABABBBAABABABAABABABABABABABABAABABABABABABABAABABABABAABABABBABABABAABAABAAABABABABABAABABABABABABABBABABABAAABABAABABABAABABABABABABABBABAABABAABABAABABABABABABAAABABABABAABABABABABAABABAABAABABABABABABAABABAABABABABABABABABABABAABABBBABABABAABABAABABABABBABABABABAABAAABABABABABABAABABAABBABABBABABAABAABBBABABABABABABAABABABABABABABABABAAABABABABABABABABAABBABABABABABABAABAABABAABAABAABABABABABABABAABBABABABABABABABABAABABABAABAABAABAABABABAABABABABAABABAABABABAABABABABABABABABABABABABABAABABABABAABABABAAABABAABAABABABABABABABABAABABAABABABAAABABABABABAABAABABABABABABABABABABABABABAABBAAABAABABAABABABAABABABABAABABABAAAABAABABABABABABABABABABABABABAABABABABBABABABABABABABABABAABABABABAABABABAABABABAAABABABAABAABBABABABBABABABABABABABAABABAABABAABABABABABABAABBABABAABABABAABBAABBAABABABAAABABABABAABAABBABABABABABAABBABBBABABABAABAABAABABABABABABAABBABAABABAABABABABABAABABAABAABABABAABABAABAABABAABABABABABABABAABABABABAABABABABABABAABABAABABAABAABABABABABAABABABABABAABBABABAAABABABAABABABABABABABABABABABABAABABABABABABABAABABABAABABABABABABABABABABAABAABABAABAABAABABAABABABBABABABABABABABABABAABAAABABABABAABABABABABAABAABABBABAABAABABAABAABABAAABABABABABABAABABABABABBABABABABABABAABAABAAABABAABABAABABABABABABABABAABAABAABBABABABABABABABABABAABAABABABABAABAABAABABABABABABABABAABABABABABABAABABAABABAABAABAABABABAABABABABABAABAAAABABABABABABABABABABABABABABABAABAABABAABABABAABABABABABABABABABABABABABAABBAABABABABAABABABABABABABAABABABABAABAAABABAABABABABABAABBAABABAABAABAABABABABABABABABAABABABABABABAABABABAAABBABABABAABAABABABABAAABBABAABABAABABABABABABABABABABABABABABABABAABABABABAABAABABABABABAABBABABABABABABAABABAABABAABAAABAAABABABABABABABABABAAABABABABAABABABABABABABABABAABABABABABAABABABABABAABABABAABAABBBAABABAABABABAABABABAABAABAABAABABABAABABABABAABABABABA"
2

".....BBBB...........B............A.............A..B.....B.............................B......B....A.........B..................B....BB......B.......A......B..............................B..........B...A......A....B......A............B.........B................A....A.....B.B.........B...............A..............BBB...........B...A.....A.................A....A......A......BB...B...B...B......B.......A....B.B.......A....A.......B..B..........AA......A........A.B..BA....A..A............AB..B..A.BA.B..A........B...A...B......A.........B.................................AB....A..........A.....A......B......A......B.B....................................B.........A....B...B..B..........A......B.............................................B.B...AB....B........B.....A..B...B.......BA...B.............B..............A..B............B...A.....BA.........B......A.............BA..........A...A.A.A..........A..A..B.....BAB....A..........B.....A..A................A.....B.B............B...............................B..A...........................A......................B.B............B....A.B..A...A............B...................B.B...............A.............B...........A.........B..........A.A.BB..B.....A......B.AA..........A..B......A.........B.........B...B..............A....B........A..........B..BA..............A.........AA............BAA.....A...B...B...A...........AAABA.........A.....B..................BB....B...............B......A.....................A..A......A..A...A....B.......B.B..B.....A...............A.............B...............A..B.B.........A.B..B..B.............A......A.A...............A...................................B.A..........A......B.B.................A..B..A............................AA........................B..B...........A..A..B.....A...........A...B...B..........B....A..A..............B..........A.........B..B..A....A...B.......B..B..B......BA.......A.............A...............A........A...........A.A.........AA.....B..............B................A...A.....B....ABB.......AA...................A............B.........B.A.......A.....A.......A...A..............................A..A.....B...............B............A..........................B...........B...A...B.......................A.....A..............................B...B.................A.........B................A...............B..........A...B.....B...B.........A..........."

Returns: "ABABABBBBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABABABABABAABABAABBABABAABABABABAABABABABABABABABABABABABABABABABABABAABABABABABAABABAABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABAABABABABABABABABABABABABABABAABABABABABABABABBBABABABABABABABAABABABABABABABABABABABABABABAABABABAABABABABBABABABABABABABABAABABABABAABABABABABABABAABABAABABABAABAABABABABABABAABABABAABABABABAAABAABABABAABAABABABABABABAABAABABAABAABABABABABABABABAABAABABABABABABABABAABABABABABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABAABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABAABABABABAABABABAABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABAABABAABABAABABABABABAABABABABABABABABABABAABABABABABABAABABABABABABABABABAABAABABABABABABABABABABABABABABABABAABAABABABABABABABABAABABAABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABAABABABABABABAABABABABAABABABABABABABAABBAABABABAABABABABAAABABABABABAABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABAABABABABABAABABABABABABABAABABABABAABABABABAABABABABABABAAABABABABABABABABAABABABABABABABABABAABBABAABABABABABABABABABABABABABABABABABABABABABABABABAABABABAABAABABABABABABABABABABAABABABAABABABABABABABABABABABABABABAABABABABABABABABAABABABABABABABAAABAABAABABABABABABABAABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABAABAABABABABABAABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABAAABABABABABABABABABABABABABAABABABABABABAABAABABABABAABABABABABABABAABABABABABABABAABABABABAABABABABABABABABABABABABABABABABABAABAABABABABAABAABABABABABAABAABABABAABABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABAABABAABABABABABABABAABABABABABABABABABABABABABAABABABABBABABABAAABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABAABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABAABABABABABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABABAABABABABABABABABABABABABABABABABAABABABABABABABAABABABABABABABABABABAABABABABABAB"
2

"BA......BA....B....A.............A.............B........A....B.BA.......B...A............AB.....B....................A..BB........B..B........A.............A....B.B.A....A.........A.....A.A.BB.........B.A..A...AA..A..AAB..........AB.......B...A...B...B....B..B.........B...................AA..AB..B........B.B.......BB.....A......A...A......B.A.A............B......B.............A.......A..........................B.......A...........B.A.....A..............A.A...B......A........AA...BB..B..BB.BB....A............B.......A.....B...B..B..A.....A.A............BA.......BA.....A..............B..B...A........B..BB.BB..A..A..........A..A.A.......B...BB..B.............B.A...BAB..A..........B...B...B...B.................A.......AA...........B.......BA.B......A..B.......B.......................A.ABB..............B.........A.....B.....A...BA.............A.......AB.....A...A..............A.A..BA..........B.A............A.....AA.A..AA...........A.............B........B.......B.......AB...B.........A.ABB...........A......................A.........A..B..............A....AAB.........A......A.AB...........B......A...A...A.............B............A.........A....A..AA....A......A.A.........BB..A....B...A.A.......B..........B.............A..A.B...B........................A..B.....B...B....A..B.........B...A.......BA.B.A........A...B........A.A.....A.................B......A.BBA...A.B.....A........AB.....B...B.....BB......A..................B.......A.A.......A.....AA.......B............A....A.......A.....AB...B........A.A.......B..B.BB.....A.....A...A.....B......A..B...B.....B.....BA...A..A.A.A.........B...........AB............................AB..AB.B...BA..A........A.B....A.....A.....B......A.....................................A.B.B.B........B........A...............A....A.A..AA....A.......B.AB.....A........A............B.....B...B...........B.....A...A.....A.B.A.A..A........A...A..B.A....B........B..................A...A.B..........A.B.A......A..B..A..............................BB.........A........A...AA................BAB.........A.....B.......A................A..A...B............A.....A...B.B....A............B....B.............A.......B....A..B..B....BA...B.B.B..A.....................B..A.........B.........B............B.AA.......A...........B........................AA..B.........A........A..B...A.AB.....B.....B.B...A.BB.......B..A.........B...........B.B.BB.......BB..A...B........B...B...BA....A...B.......A...AB..........B......BBAB..........A....A....B..B..B...AB........."

Returns: "BABABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABAABABAABABABABABABAABABABABABABABABABABABABABABABABBABABABAABAABABABABABABABABABABABABABABABABAABABAABABABABABABABABABAABBABABABABABAABAABABAABAABAAABABABABABABABABABABABABAABAABABABABAABAABABABABABABABABABABABABABABABAAABAABAABABABABAABABABABABABBABABAABABABAABABABABABABAABABABABABABABABABABAABABABABABABABAABABABABABABABABABABABABABABABABABABABABABAABABABABABAABAABABABABABABABABABABAABABAABABABABABABABABAAABAABBAABAABBABBABABABABABABABABABABABABAABABAABABABAABABABABABABABABABABABABABABABABAABABABABABABABABABABABABAABABAABABABABABAABBABBABABAABABABABABAABAABABABABAABABABBAABABABABABABABABAABAABABABABABABABABABABABABABABABABABABABABABABABAABABABABAABABABABABAABABABABABAABABABABABABABABABABABABABABABABABABABABABAABABBABABABABABABAABABABABABAABABAABABABAABAABABABABABABABABABABABABABABABAABABABABABABABABABAABABABABABABABABABAABABABABABABAABABABAABABAAABABABABABABABABABABABABAABABABABAABABABABABABABABAABABABABABABABAABABBABABABABABAABABABABABABABABABABABAABABABABABABABABABABABABABABABABAAABABABABABAABABABAABABABABABABABABABABABABABABABABABABABABABAABABABABABABABABABABABABABABAABAAABABAABABABAABABABABABAABBABABABABABAABABABABAABABABABABAABABABABABABABAABAAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABAABAABAABABABABAABAABABABABABABABABABABABABABABABABABAABABABABAABBABABAABABABAABABABABAABABABABABABABABABBABABABABABABABABABABABABABABABABAABABABABABABABABAABABABAABABABABABABABABABAABABABABABABABABABABABABABABABABABABAABAABABBABABAABABABABABABABAABABABABABABABABABABABABABABABABABAABABABABABABAABABABABABABAABABABABABABABABABABABABABABABABABABABABABABAABABABABAAABABABABABABABABAABABABABABABABABABABABABABABABABABABABABABABABAABABABABABABAABABABABABABABABABABABABABABABAABABAAABABAABABABAABAABABABAABABABABAABABABABABABABABABABABABABABABABABABABABAABABABABABAABAABABAABABABABAABABABABAABABABABABABAABABABABABABABABABABABABAABABABABABABAABAABABABAABABABABABABABABABABABABABABABABABABABBABABABABAABABABABAABABAABABABABABABABABABABABABABABAABABAABABABABAABABABABABABABABAABAABAABABABABABABABABABABABAABABABABABABABABABABABABAABABABABABABABAABABABAABABABABABAABABAABABAABABABABABABABABABABABABABABAABABABABABABAABABABABABABABABABABABAABAAABABABABABABABABABAABABABABABABABABABABABABABAABABABABABABAABABABABAABABABAABABABABABABABABABABAAABBABABABABABABABABABAABABABABABABABABABBABABABABBABABAABABABABAABABABABABABABAABAABABABABAABABABABABABABAABABABAABBABABABABABABABABAABABABAABAABABAABABABABABA"
2

"ABB.AAB.BBBABBABBBBAABAAA..ABBBBB..A..AABB..ABB....B.BB..B..AA..BAAA.A.B.A....B.A...BB.B.AB.B.A.......BBAB.A..A.BAB..AAA.ABB.AAB.BBBABBA...AA...AAAABABA.BB.ABBBBBB..A.A.BAA.ABBA....BBBAABBAAB...BB..BBA.BAB.BBBAAA.BA...AAB.AABABBAABBA.AB.AA..B.BBA.A.B.BBBABBBA.A..AAA.AA..AAA.BABAAB.ABBB...BABAAA...B..ABAABBBBA.A.AA.AB..B...ABBABAAB.BA.BBBBBBAAA..ABA.AAB.AA...B.A.....BBB.BB.B.B..AB.BB.ABBB.B.BB.AA.AAB.A..A..A.AB.BBBB...AABB..BBBAAB..B...AA...A.....BB....B.A.A.BABB.BB.AAAAA...A....BA....BA.A..A.ABABAA.BAAA.A.BB..BAAB.A...AABBBB.B.A..AA.BAB.BABABA..BB.AB.BABB..A..A.B.A...ABAB.A...AB..A..AAB.B.ABBA..BB..AABA.B...AA...A........B..AA.BA.A...B.....BB..AB.AA...BA.B.AAA.A.A..AB.AA..AB.B..AAB.AAA.AB.A..BB..B.A.A.BA.A.ABA.B.AAA.AB.B.AA..BB.BB...BABBAAB.....BBBBA.AAA...BBA......AB...A.ABABA.ABABBABAA..B..A.BBAB..BABBBA.BAA.B...BBA.B.BBABAA.B..B.BB.BB..BBB.AAA.B.AA.B....BBB.....B.BA.AA.A...A..ABA.B....B.B.AABB.BAB.AAA.ABA..ABB..ABABB....AAA..B.ABBBABAAB.ABAA..BB.BBABA.BBBBBBB...BA...A.A.A.B...BAB.....B.ABA.AAAAB..A..B.B..A.AABBBA.BBBAA....AABBAAA.A.B.AAB.BAAB...AAA..AABA...AA.ABA...BB.AAB.BAABBB.B.B....B..BAB...A.A.A..BBA...A.BAB.BBB.A.A...ABA.BAB..A....BBBAB.BA.A.B...BBAB.B.BBBAA.B...A.B...AAA...BB..A....B....B.BB.....BBA..B..BB.AB..BA.AAA..BBA.BBA.B..B..BB.AAA.ABBA..ABBA..BB..BAA.AB...A.BBB.B..A.BB.B.BAAAA.B.BBA..A.AA...B..B..BAA.BAB.A..A.B..BBABAA..A.A.AA.AA.BAAA.AB.BB..AAA.AA.B.A..A..B..ABAA..BB.ABAB..B.AA.B.B.ABB.B..BA.AAAAA...BBB...A....BB..A..B..BB..BA..BAB.A..A..A..BA.A.BB.A.BA.B.A...BA...A..ABB.A.BB.BB.B..BBBA..B.BAABAB.A..A..ABAAAA.....B.B.BBB..ABB.AAB.....A.BAA....A.BAAA.BBB.A..A..B.BAABB.A....B...AAB.ABAAB.BBB.ABB..BBAA.AAB.A.B.ABBBBBAB.A.ABB..AA.BA.AA....AAA...BABA.A.BBB.AB.BAAB..AAA..ABB.BB..AAABB..A...ABBA.A.ABBAB....A..BA...AB..BBAA.BBB.ABA.BBB.ABB.ABA.BAABBB.AB...AAAAA.A....ABA.ABB.B..A..BB.A.BBBA.B.B..A.A.B.AA..AAA..BAA.AB.BAAA..A.A...BA.A.AAABB.BA.BBB..B..BA..BBAA..ABB.ABAA.B.B.AA.AB....BA.B.A.B.ABA.B.ABAABB.A..B.A..A...AAA.AA.BA..AB.A.B.A.BAAA..B.B.BBA..B.A.B......B.AABA....AABBABB..AB.A.AAB.A.AABA...A...ABB.AB."

Returns: "ABBAAABABBBABBABBBBAABAAABAABBBBBABABAAABBABABBABAABABBAABABAABABAAABAABAABABABAABAABBABAABABAABABABAABBABAABAAABABABAAABABBAAABABBBABBABABAABABAAAABABAABBAABBBBBBABABAABAABABBABABABBBAABBAABABABBAABBAABABABBBAAAABABABAABAAABABBAABBABABAAABABABBABAABABBBABBBABABAAAABAABAAAAABABAABAABBBABABABAAABAABABABAABBBBABABAABABAABABAABBABAABABAABBBBBBAAABAABABAABAAABAABAABABAABBBABBABABABABABBAABBBABABBAAABAABAABAABAABABABBBBABAAABBAABBBAABAABABAAABABABABAABBABAABAABAABABBABBAAAAAABABABABABABABABABABAABABABAAABAAABAABBAABAABAABABAABBBBABAABAAAABABABABABABABBAABABABBABABAAABAABABABABAABABABABABAAABABAABBABABBABAABAABABAAABABABABABABABABAAABABABAABABABABBABABAAABAABAABAAAABABABAABAAABAABABABAABAAAABABAABABBAABAABAABABABABAABAAAABABABAAABABBABBABABABBAABABABABBBBABAAABAABBABABABAABABAABABABABABABBABAABABABAABBABAABABBBAABAAABABABBAABABBABAAABAABABBABBAABBBAAAAABAAAABABAABBBABABABABABAABABABABAABAABABAABABAAABBABABAAAABABABAABBABABABBABABAAABABAABBBABAABAABAABABBABBABAABBBBBBBABABABABABABAABABABABABABABAABABAAAABABABABABABABAABBBAABBBAABABAAABBAAABAABAAABABAABABAAAABAAABABABAABABABAABBAAABABAABBBABABABAABAABABABAABABABABBABABAABABABBBAABABABABAABABABABABABBBABABABAABABABBABABABBBAAABABAAABABAAAABAABBABABABABABAABABBABABABBABABAABBAABAABABAAABABBAABBAABAABAABBAAAABABBABAABBABABBAABAABABABAAABBBABABAABBABABAAAAABABBABAABAABAABAABAABAAABABAABAAABAABBABAABAABABAABAAABAAABABABBABAAABAAABAABAABABABABAABABBAABABAABAAAABABAABBABAABABAAAAABAABBBABAABABABBABABABAABBAABABABABAABAABAABABABAABBAAABAABAABAABABABABAABBAAABBABBABAABBBABABABAABABAABAABAABAAAABABAABABABBBABABBAAABABABAAABAABABAAABAAAABBBAABAABABABAABBAABABABABAAABAABAABABBBAABBAABBAABAABAAABAABBBBBABAABABBABAAABABAABABAAAABAABABABAABBBAABABAABABAAABAABBABBABAAABBABABABABBABABABBABABABABABABABABAABBAAABBBAABAABBBAABBAABAABAABBBAABABAAAAAABABABAABABABBABABABABBAAABBBAABABABABAABAAABAAAABABAABABABAAABAABABAABABABAAABBABAABBBAABAABABABBAABAABBAABAAABABAAABABABAABAABAAABAABAABAABAABBAABABAABAABABAAABAAABABAABAAABAAABAAABABABABBABABAAABABABAABAAABABABAAABBABBABABAABAABAABAABABABABABABBAABA"
2

"ABABBBBABAAABBABBBAA.BA.ABB.BAAAAAABAABBABBABABB.BBBABABAAAA.ABA.ABBBBABABA.BAB.BBA.ABAAB.BBAAABAAB.AAABBBBABBAABBBBAB.ABBBAABAABBAAABA.A.AABBABBAA.BA.BBBBBA.BBAABABB.AABBBA.BAAABABAAABBABABABBBB...B.BBBBBBA..BAA.AB.BABBBABB.ABBBABB.AAA.BB.BAB.BBBABAABABBBBBABBBBB..ABBAABBB.BBBBABBABAAB..BAAAAABAAB.BAA.ABA.A.BBAAAABAB.ABABBABBBBABAAA.BABAA.A.BBBBAABABBABBBABB..AB.AB.BBBABBBB.AABBAB.BABABAABA.ABBB..A.A.BBAABA.BAB.AB.A.BAABBBBBB.ABBBAAB...A.AA..AAABABBABBBAB.BBABBABBAABBBAA.BA.AAABABBAAAABAABAB.AABB.BAAAAAABABBABBBABAB.BBABBBABABABAAABBBAAB..AABAB.BB.ABA.A.ABB.BAABBABAABB.ABBBBBABAAABABAABA.AB.AB..BBBABBAABAAB..BABBAAAAABABBABABABAABABAABAABA.ABBBBABA.BBB.ABBABBBA.BAAB.A..AABAA.AABAABB.AABA.BB.BAAAABAAAA.BA..BBBBAA.ABAB.B..A.ABBA.B.BBBAA.BBBAAB.BBA.AA.B.B.AB.A..BAABAA.BAAAAAAABA.ABB..BBA.BBBBBBBBAB.BBAABABABB.BABAAB.BA.AABBBBAABBAAABAABBAAA.ABAAA.A.ABBBBAABAAAB.A.A.B.AABBAAAAAAABBAAABBBBABABB.AAAABA.B.AAAB.B..BAA.A.B.A.ABBABA..B.ABABA.ABBAABA.AA.BAABAABABB.BA.AAABAA.BB.AAB.B.ABAA.BAA.BB.AB.BBBBABA.BAA.B.AAABABAAABBAABAAB.AA.BAAAAAAB.A.ABAABAABAABBBAAAAAA.BA.AAA.ABAAAA.ABB.BB.BBBBAABAAAAA.ABBAA.AAA.ABABA.BAABAABBBBAB.BBBABA.AABBBABBABBA.BB.BABBAABAABABBBABB.BBAABBAAABAAAABAB.BB.A.BBBA...AABBAABBBBA.BBA.B.ABAB.AABABBA.AB.BBBBBBBBBAAA.BABBAAABABABAA.AABAA.AABBAAAA.AAB.BABBAAAABAAA.BABABBAAABB.A.B.B.BBAAABBAAAB.BBAAAAABBB..AABBB.BBBA.BBBABBABB.AAAABAA.BAABABBBAABBAA.BA.ABBBBBAB.AA.BABBABAA..A.BA.BB.BABBB.ABABBB.BBABAABBB.AAABBABBAAABBA.AAABBBABBBBBAB..ABABBBBABBB.ABBABBBBAAABBBABB.A.BB..ABBBBAAAABBAB.BAAAABBBBAAB.AABBAAABBBBAAAABABABBA.BBBB.ABBAABAABBB.BAAAABABAABABBAAB.AABAA.BBABBBBA.BBABABAAB.ABBAAABBBABAAABABBBBBA.BABA.AAAABB.BAABBAABABBAABBBBAAABAAABBBABBAABAB..BBAA..BABA.AAABAA..BAABBB.BABAB.BAAAAABABBABAABAAB..BBB.AABAABBAB.B.AB.BBABBAABAB.B.BBBAAABBAABBBB.ABAB...AA.BAB..BABABAA.BAA.A..AA.BABBA.A.B..BAABAB.A.BBAAAA.AAAB.BAB.BBBAA.AA.BABBA.BB.BBA.AAAABBB.BABBABABBABAABAB.AABB..BBAABA.BBBAAAA.A.A.AAAABA.BABAAB.BAA.BABBAABAAA.A..BABABABBABABAABBBBA.A.BBAABABAAB.BBB.BABABBABAAABAABBBAA..B.BBB.AAAABAAA.BAB.BBA.BBA.AA..BA.A.BAAAAB.BBAAABABBBAAABAA..ABBABAABA.B.AA..ABABABABBBA.AAAAAAABAA.BAABBAABABBBABBAB.BBAAABABABBBAABBBBBAAB.ABBBBBA.BAA.AAA.AB.A.AAABBABBAAAAAAAA.BA.BBAAAA.A..ABBBBBBBABABABBBBABBBBBBABABB.BABBBBAAABABAA.BAAABABAAB.BABBABAAABAABBBBAAABABABABAAAABBAAABAA.ABAAABBAB.A.ABAA.B.BABAABBB..A"

Returns: "ABABBBBABAAABBABBBAAABABABBABAAAAAABAABBABBABABBABBBABABAAAABABABABBBBABABAABABABBABABAABABBAAABAABAAAABBBBABBAABBBBABAABBBAABAABBAAABABABAABBABBAAABAABBBBBAABBAABABBAAABBBAABAAABABAAABBABABABBBBABABABBBBBBABABAABABABABBBABBAABBBABBAAAAABBABABABBBABAABABBBBBABBBBBABABBAABBBABBBBABBABAABAABAAAAABAABABAABABABAABBAAAABABAABABBABBBBABAAAABABAABAABBBBAABABBABBBABBABABAABABBBABBBBAAABBABABABABAABABABBBABABAABBAABAABABAABAAABAABBBBBBAABBBAABABAABAABAAAABABBABBBABABBABBABBAABBBAAABABAAABABBAAAABAABABAAABBABAAAAAABABBABBBABABABBABBBABABABAAABBBAABABAABABABBAABABABABBABAABBABAABBAABBBBBABAAABABAABABABAABAABBBABBAABAABAABABBAAAAABABBABABABAABABAABAABABABBBBABAABBBAABBABBBAABAABAABAAABAABAABAABBAAABAABBABAAAABAAAAABABABBBBAABABABABABABABBAABABBBAAABBBAABABBABAAABABAABAABABAABAAABAAAAAAABABABBAABBAABBBBBBBBABABBAABABABBABABAABABABAABBBBAABBAAABAABBAAABABAAABABABBBBAABAAABAABAABAAABBAAAAAAABBAAABBBBABABBAAAAABAABAAAABABAABAABAABAABABBABABABAABABABABBAABABAAABAABAABABBABABAAABAAABBAAABABAABAAABAAABBAABABBBBABAABAAABAAAABABAAABBAABAABAAAABAAAAAABAABABAABAABAABBBAAAAAAABABAAABABAAAABABBABBABBBBAABAAAAABABBAABAAABABABAABAABAABBBBABABBBABABAABBBABBABBAABBABABBAABAABABBBABBABBAABBAAABAAAABABABBAAABBBABABAABBAABBBBAABBAABAABABAAABABBABABABBBBBBBBBAAAABABBAAABABABAABAABAABAABBAAAABAABABABBAAAABAAAABABABBAAABBAAABABABBAAABBAAABABBAAAAABBBABAABBBABBBAABBBABBABBAAAAABAAABAABABBBAABBAAABABABBBBBABAAAABABBABAABAAABAABBABABBBAABABBBABBABAABBBAAAABBABBAAABBABAAABBBABBBBBABABABABBBBABBBAABBABBBBAAABBBABBAAABBABABBBBAAAABBABABAAAABBBBAABAAABBAAABBBBAAAABABABBAABBBBAABBAABAABBBABAAAABABAABABBAABAAABAAABBABBBBAABBABABAABAABBAAABBBABAAABABBBBBAABABABAAAABBABAABBAABABBAABBBBAAABAAABBBABBAABABAABBAABABABABAAABAABABAABBBABABABABAAAAABABBABAABAABAABBBAAABAABBABABAABABBABBAABABABABBBAAABBAABBBBAABABABAAAABABAABABABAAABAABABAAAABABBABAABAABAABABAAABBAAAABAAABABABABBBAABAAABABBAABBABBABAAAABBBABABBABABBABAABABAAABBAABBAABAABBBAAAABABABAAAABAABABAABABAAABABBAABAAABABABABABABBABABAABBBBABAABBAABABAABABBBABABABBABAAABAABBBAABABABBBAAAAABAAAABABABBAABBABAABABABAABAAAABABBAAABABBBAAABAABAABBABAABAABAAABAABABABABBBABAAAAAAABAAABAABBAABABBBABBABABBAAABABABBBAABBBBBAABAABBBBBAABAABAAABABAABAAABBABBAAAAAAAAABAABBAAAABABAABBBBBBBABABABBBBABBBBBBABABBABABBBBAAABABAAABAAABABAABABABBABAAABAABBBBAAABABABABAAAABBAAABAABABAAABBABAABABAAABABABAABBBABA"
2

"B.A..B.AB.BA.BAB.A..AB....AB..BBBAA.B.AAA.BB.BBBBABAAAB.BABB.BBAAAABBB.BBAAABABA..BAAAA.ABBAAABABBB...BB..A.....AA.AAAB.AAB.BABA.B..BA.AABABAABABB..AAAB...AAABAB.B.ABBABB.A.BBBAABBBBAA.AAA.ABBAB..ABAAAAA..BBBAA.A.B.A.BABB.BBBBABABB.BBA.ABB.A.BB..BAA.AAB.ABAAAA.AABBABAAB.AA.BBAABA.AAABBABBBBBABBB..BBAB...ABBAA..BB.AB.B.AA.A.BA.BAABB.B.AAAAAB.AAA.BA.BB...AABABAA.BABAAB.AB.AA..B.B....A.AABBA.AABAABBBBAAA.A.BA.AA..B.AAAB.B.BBBAA.BB.BAB..BB.BBAAAAB.ABB.A...BB.B.BBAAAB.BB.AA.B.B.A....AABAAAB.B.B.B..AAAA.A..BB.B..BABABBBB.BBBA.BB.ABAB.B..ABBBAA..A.AB.B.B.BA.ABAB...B.B..AB.A.A.AA..A.BBAAAAA.A.BAAAABABA..ABA.B.ABBBAB.BABAA...BBA.AAAABBABAA.ABAAA..BAAB..BAA.AAA.A.ABBBB.A..BBA.ABBBAB.ABAB.ABB.AA.BBBAA.BAAA.BABA..BAA.BABBBAABBAB..AA.ABBAABB.AA..AAA.BBABABA..A.ABAAABBBBBBA.A.BA.AABAB...AA.AAABB.AA..B.ABAB..A..BA.BAABB.BB....A.BBBB..BA.BBBBABAAAAAAA.ABB.A.A..AABBB.A..AAAABABA..B.A....ABAA.B.AABAA.BBBAA..BB.AAB.B...BABABBA.ABAA.AAABA....BBB.BBAA..AA..B.BA.BBBAB.ABAABB.AABA.BB....ABA....BA.BB..BBB.A..BAB.AAABA.B...BB.AABBBB..BABBB.BBBB..B.B.BBA..B.AB.ABAABB.A..B.AA.ABA.BA.AA.A..AB..ABAAA.AAB.AA..BAA..AB.A.BA.B.A..A..B..BAAAABBBA...BB..B.AB.A.BBBB.AB..BAB.BAAABABBABBABBBBAABABB..A.ABB.B.B..BAA.AA.ABAAAAABBBBA..AABB.BA.BBB.AAB...BBAB.BABAABAAABB..A.A.BA.BA.AA..ABA.BAABBAA.ABBB..BA.A.B.BABBA.BAAABBA..ABBA.AA.BB.AABAAAABB.B.BBBAB.AAAB..ABA.BBAB..AAA.ABBBBABA.BBBBBBAABB.B..BBA.B.A...BA.A...BAA.ABAAB.A....AA.AB.BB.AB.A.BAABA.B.BBB.BABB.AAAAABA.....BB..ABBBBA..ABBBA.BBB.AA.A.B.B.BBB.BBBBAA.A...BAB..AB.BB.A.....A..BA..BBA.BAB..BA.AB.AB...BB.B.BB.ABBA...AABB..BAA.BBB.BA....BBAB.AAA.B.BAABB..AAB.ABAA.ABBA.BA..B.A...AA..B.A.A.BBAA...AAABBBB..A.BAA.AA.ABB.ABB.B.B.BBAAAA.ABAA.BBAAABBAA.BA.BB.BA.B...AAB.AA.ABBABA..AAAAA..A.A..AABAA.A..BABAB.AABABA.ABAAABBBBAB.BAABBA.BAA..A....BABBBA.BB..A.AABBBBBA.BA.AAAB.AA..ABB..A..AB.BBBB.B.A.B.A..AABB..AAABBBAABA...BB....ABAA.AB..BBA.ABB.BBAABBAA...ABB..B.A.BBA.AAA..A.B.BAAABAB...B.BBAABBB.B...BAA..BAAAAABB.BBBBBBA.BBB..BBAAAA.BB.BABAABA..A..B.A.ABABA.A...ABABABB.AAAB.ABABB.A.ABBABA..ABABAB..BABBBBB.BBA.BBB.A.A.A.AB.BB.A...ABA..BAA.BBA..B.B.BABA.BBB.B.B..ABAAAA.BAA.B...AAAABAB....AA.AA.ABB.A.ABABB.BAAB...B..AABBBAB..B..ABB.BBA..BB..A.AABBBA.ABA.....BA.B.BBA.ABA.BABABAA.BBAAB.AA.AB.ABB..BAAA.B.ABBBA.AAB..BABBBABBABABB.A.B..BBAB.....A.AA..AAAAA.ABB.AABAA.BBAAAABA.BB.BBBA.AA.B.BAA.B.BB..B.ABAABB.AB.A..B..BB..ABAAABAB.AA.BAABABAAABBA.BBAAAAAAB...ABABA.AAA.B.A.BBBAB..BA.ABBBA.B.B.A...A.BBAAB.AA..AAB"

Returns: "BAABABAABABAABABAABAABABABABAABBBAAABAAAAABBABBBBABAAABABABBABBAAAABBBABBAAABABABABAAAABABBAAABABBBABABBABABABABAABAAABAAABABABAABAABABAABABAABABBABAAABABAAAABABABAABBABBAAABBBAABBBBAABAAABABBABABABAAAAABABBBAABAABAAABABBABBBBABABBABBABABBAAABBAABAABAABAABAAAABAABBABAABAAAABBAABABAAABBABBBBBABBBAABBABABAABBAABABBAABABAAABAABAABAABBABAAAAAABAAAAABAABBABAAABABAAABABAABAABAAABABABABABABAABBABAABAABBBBAAABAABABAABABAAAABABABBBAAABBABABAABBABBAAAABAABBAABAABBABABBAAABABBAAAABABAABABAAABAAABABABABABAAAABABABBABAABABABBBBABBBAABBAABABABABABBBAABAABABABABABABABABABABABABABAABABAABAAABBAAAAABAABAAAABABABAABAABAABBBABABABAABAABBABAAAABBABAABABAAABABAABAABAABAAABABABBBBAABABBABABBBABAABABAABBAAAABBBAAABAAAABABABABAAABABBBAABBABABAABABBAABBAAABAAAAABBABABABAABABAAABBBBBBABAABABAABABABAAABAAABBAAABABAABABABABABAABAABBABBABABAABBBBAABAABBBBABAAAAAAABABBAABABAAABBBAABAAAAABABABABAABABAABAAABAAABAAABBBAABABBAAABABABABABABBABABAABAAABABABABBBABBAABAAABABABAABBBABAABAABBAAABAABBABABABABABABAABBAABBBAABABABAAAABAABABABBAAABBBBAABABBBABBBBAABABABBABABAABAABAABBAABABAAABABAABABAABABAABABABAAABAABAAABABAABAABAAABAABAABAABABAABAAAABBBABAABBAABAABAAABBBBAABAABABABAAABABBABBABBBBAABABBABABABBABABAABAABAABABAAAAABBBBABAAABBABAABBBAAABABABBABABABAABAAABBABABAABAABABAABAABAABAABBAABABBBAABABAABABABBAABAAABBABAABBABAAABBAAABAAAABBABABBBABAAAABABABAABBABABAAABABBBBABAABBBBBBAABBABAABBAABAABAABABABAABAABABAABAABABAAABABABBAABAAABAABAABABBBABABBAAAAAABABABAABBABABBBBABAABBBAABBBAAABAABABABBBABBBBAABABAABABABABABBAABABABABABABABBAABABAABABABAABABABBABABBAABBABABAABBAABAAABBBABABABABBABAAAAABABAABBABAABAABAABABBAABABABAABABAABABAABAABBAABABAAABBBBABAABAABAABABBAABBABABABBAAAABABAAABBAAABBAAABAABBABAABABAAABAAABABBABABAAAAAABAABABAAABAABABABABABAAABABABABAAABBBBABABAABBAABAABAABABABABBBAABBABABAABBBBBAABABAAABAAABAABBABABAABABBBBABAAABAABAAABBABAAABBBAABABAABBABABABAABABAABBABABBABBAABBAABABABBAABAAABBABAAABAAABABAAABABABABABBAABBBABABABAABABAAAAABBABBBBBBAABBBAABBAAAAABBABABAABABAABABAABABABABABABABABABBAAAABAABABBAABABBABABAABABABAABABBBBBABBAABBBAABABABABABBAABABABABABAAABBABABABABABAABBBABABABABAAAAABAAABABAAAAABABABABAABAABABBAABABABBABAABABABABAABBBABAABABABBABBABABBABABAABBBABABABABAABAABABBABABAABABABAAABBAABAAABABAABBAABAAAABAABBBABAABAABABBBABBABABBAAABAABBABABABAABAABAAAAAABABBAAABAAABBAAAABAABBABBBABAAABABAAABABBAABAABAABBAABAABABAABBABABAAABABAAAABAABABAAABBAABBAAAAAABABAABABABAAAABAAABBBABAABABABBBAABABAABABAABBAABAAABAAAB"
2

"AABBABAABBABB.BBAAAAABBAB.BAAABABBABABBABAA.AAAABBBAAABB.BBABAAAABBBA.BABAAAAA.ABBBBBAAAA.ABBABBABBBABBAAAAABBAAAAA.B.BAAABBBAAAABBAAAABABBBBBBBBAAABAAA.BBBBBABBABBAAABBBAABBB.ABABBBAABABAAABABBBBAABA.BBABBAAAABBBBAB.BAAAABBAAABAAABABBBABABBAABABBBBBBBAABB.ABB..AAABA.A.BAABBBBABAAABBAABABAABAABBBAABAABABBBBAAAABBABBAA.ABBABBBBBAAAABAABAA.BBBBBA..BBABBBABABBAABAB.BBA.AABAAAABA.AABBBBAABAAAABBBBA.ABBBBBBABBBBBBABB.AABAAA.ABABABAABAA.BBBBBBBABBBABBAABABAAAAAABABA.A.BBBBBBBBBAABA.ABABBBABBABBBBA.BAB.BABAA.B.ABBABAB.A.BBBBBAABABBBBAA.BABBBAA.B.AA.AABBBB.BAA.BB.ABAABBABAAAABBAABBA.BBBBBAA.AAABBAAAABABABABBBBABAAABBBB.ABBAABBBABBAAAAABBA.ABBABA.BABBBBABBABABBAAAABABAAAAABBBBABBBBAAABAABABBBB.AAB..BB.BABBBBAAABBABAABB.BBBABBBBBABAA..BAABAABABABA.AABBABABBBBABAAABAAABBAABBAAABAABBB.ABBABBBABAAB.A.AAABAAABAABBAABBBBAAB.AABBAAAAABAAAABBAAAAAABBA.AAA.BABAABBAAABABAB.BABBABAABBABABBBA.BABBBABBBBBBBBA.BBABA.BABAABB.BAAABABBBABB.ABAAAAB.BABABA.AAAABABBABAABBBAAB.AABABBA.BBAB.BABBAABBAABAABABABBBAABAB.BABBBBBB.AABABBABABBA.ABBBB.BBBBAABABA.AAABBAAAABBAAAAA.ABABBBAAABBBBBBBBABBABBAAABAB.BAABBABBBBABAAABB.AAAAA.ABAA.BAAAAA..BBBAABAA.AABBABBABBBABBBBBA.BABBABABBAAABAAB.AAABBBBAABABABAAABBBAAA.BABABBBABAAABBBAAAB.BBB.AAA.BBABABABBABA.AA..AABBABBAABAAAB.BAABBBABAAAABABAB.ABBBBBBABABA.AABABAABAABAAAAB.BBBB.ABABBBBAAAA.ABBAB.BBBABABBB.BAABAABAAAAAAAAABBABBABAABABBABBAAABB.AABBBBBBAABAAABBBAABABAABAABBBABAABBBBBAAAAAAAAAAB.B.AA.ABBBBABABBBBAAB.BBBBBA.BBABABABBBBAABBBBBAABAAAAAAAABBABAABABBABBABBABAAAAAAAA.BAA.BAAAABABBBBBBABAAABABABBAABB.AAAAABABBBABAAABBBABBBBBAAAABBAA...BAAAABABBBAB.BBABBBABBABABAAAAAABAABABAAAABABBABBABB.AA.BAAABB.BAABBAA.BABAAAABAABAAABABAB.AAABBBA.BBAAABBAABBBBABABABBBAAAAABABAABBBABAAA.AAAABBABBA.AAABBABABABABAAAABBAAABBBBBA.B.AAAA.AAAABBAB.ABBABBAA.ABAB.AABBBAABAABBBBAAABBABBABABBB.AABABAABAAAAAABAABA.ABBBAABBBAABBBABBBAABAB.BBBBAAAABBABBBAAB.BABABBBBBBBABABBBABBBBB..BABBAABBBAABABAAABABBABABA.AABA.ABBAABABA..ABBBBBAAAAAAABABBBABBAAAABABBAABA.AAAABBBBB.BBB.BAA.ABAAAAB.BBABBBBBABAB.BABABBBBAAB.BBABBAABAAABB.BABB.ABAABABAB.BBA.BBBBAAAB.AAAA.BBAAA.BBAABAABBBBBBAAAABAABAAABBAABBAAAAABABBBBBAAA.BBB.BABAAAAABABBABBBAB.ABB.BBABBAAAABABA.BABBABBABBBAAABBBBBBBAABBABAABBBBBAAAAABAB.AB.AABAAAAABABAAAAAB.AAAABBABAABBAAABABBABBBABABBABAAAB.B.BBBB.B.A.ABBAABBAA.ABBBABAAABBBAAAB..ABBBBBBAABBABBBAAAABAAABBAABBBABBBBABBABBAABABABABBAAABAAABABBABBBBBBABABBAAABABAA.AAA.ABBABBBBBBBAB.AA.B.AAB..BABBA.AAAABBABBBBAABABAAAABBABAAAABABAABAAB"

Returns: "AABBABAABBABBABBAAAAABBABABAAABABBABABBABAABAAAABBBAAABBABBABAAAABBBAABABAAAAABABBBBBAAAABABBABBABBBABBAAAAABBAAAAAABABAAABBBAAAABBAAAABABBBBBBBBAAABAAAABBBBBABBABBAAABBBAABBBAABABBBAABABAAABABBBBAABAABBABBAAAABBBBABABAAAABBAAABAAABABBBABABBAABABBBBBBBAABBAABBABAAABABAABAABBBBABAAABBAABABAABAABBBAABAABABBBBAAAABBABBAABABBABBBBBAAAABAABAAABBBBBABABBABBBABABBAABABABBABAABAAAABABAABBBBAABAAAABBBBABABBBBBBABBBBBBABBAAABAAABABABABAABAAABBBBBBBABBBABBAABABAAAAAABABABAABBBBBBBBBAABABABABBBABBABBBBAABABABABAAABAABBABABAAABBBBBAABABBBBAAABABBBAAABAAABAABBBBABAAABBAABAABBABAAAABBAABBAABBBBBAABAAABBAAAABABABABBBBABAAABBBBAABBAABBBABBAAAAABBABABBABAABABBBBABBABABBAAAABABAAAAABBBBABBBBAAABAABABBBBAAABAABBABABBBBAAABBABAABBABBBABBBBBABAABABAABAABABABABAABBABABBBBABAAABAAABBAABBAAABAABBBAABBABBBABAABAABAAABAAABAABBAABBBBAABAAABBAAAAABAAAABBAAAAAABBABAAAABABAABBAAABABABABABBABAABBABABBBAABABBBABBBBBBBBAABBABAABABAABBABAAABABBBABBAABAAAABABABABABAAAABABBABAABBBAABAAABABBAABBABABABBAABBAABAABABABBBAABABABABBBBBBAAABABBABABBABABBBBABBBBAABABABAAABBAAAABBAAAAABABABBBAAABBBBBBBBABBABBAAABABABAABBABBBBABAAABBAAAAAABABAAABAAAAABABBBAABAABAABBABBABBBABBBBBAABABBABABBAAABAABAAAABBBBAABABABAAABBBAAAABABABBBABAAABBBAAABABBBAAAAABBABABABBABABAABAAABBABBAABAAABABAABBBABAAAABABABAABBBBBBABABABAABABAABAABAAAABABBBBAABABBBBAAAABABBABABBBABABBBABAABAABAAAAAAAAABBABBABAABABBABBAAABBAAABBBBBBAABAAABBBAABABAABAABBBABAABBBBBAAAAAAAAAABABAAABABBBBABABBBBAABABBBBBAABBABABABBBBAABBBBBAABAAAAAAAABBABAABABBABBABBABAAAAAAAAABAAABAAAABABBBBBBABAAABABABBAABBAAAAAABABBBABAAABBBABBBBBAAAABBAABAABAAAABABBBABABBABBBABBABABAAAAAABAABABAAAABABBABBABBAAAABAAABBABAABBAAABABAAAABAABAAABABABAAAABBBAABBAAABBAABBBBABABABBBAAAAABABAABBBABAAABAAAABBABBABAAABBABABABABAAAABBAAABBBBBAABAAAAABAAAABBABAABBABBAABABABAAABBBAABAABBBBAAABBABBABABBBAAABABAABAAAAAABAABABABBBAABBBAABBBABBBAABABABBBBAAAABBABBBAABABABABBBBBBBABABBBABBBBBAABABBAABBBAABABAAABABBABABABAABABABBAABABABAABBBBBAAAAAAABABBBABBAAAABABBAABABAAAABBBBBABBBABAABABAAAABABBABBBBBABABABABABBBBAABABBABBAABAAABBABABBAABAABABABABBAABBBBAAABAAAAAABBAAAABBAABAABBBBBBAAAABAABAAABBAABBAAAAABABBBBBAAAABBBABABAAAAABABBABBBABAABBABBABBAAAABABAABABBABBABBBAAABBBBBBBAABBABAABBBBBAAAAABABAABAAABAAAAABABAAAAABAAAAABBABAABBAAABABBABBBABABBABAAABABABBBBABAABABBAABBAABABBBABAAABBBAAABABABBBBBBAABBABBBAAAABAAABBAABBBABBBBABBABBAABABABABBAAABAAABABBABBBBBBABABBAAABABAABAAABABBABBBBBBBABAAAABAAABAABABBABAAAABBABBBBAABABAAAABBABAAAABABAABAAB"
2

"AA..A...A......A..BA.A.AA..A.A.A...BBB.BAAABA.BB..A.A.A...BB....AAB....A.AABA.B.AB..BB.BAAB...AA.....BAB.........A.B.A..B.A.BB...AABA..A.AB.A..BA.B..BAB.A.B.AB.BB.AB.AA.AB.B..BABBAABAABBA.B....BAA...B.A..AB.B.....A.BBBABA.A.A.A..ABA..BAAB.BBABB..A.BAABAAB..AA..A.BB..BB.BA..BB..B..A..B.A..AB.B.AAB.ABB.A.....A.B.B.B...B...AA.A...A...BABAA..B....BA.AAAAAABA.B.B..A.ABAB...BBBAB.AB.B....AA.A..BBA.AB.......AB..B...ABB.B.A............A...B.BBA..B..BA..ABBA.BA..ABBA..AA.A.....A.BB.A.ABBABA.AABAA........B..B..A.B.....B....A....B..BBB.AAB.AA.A.BABB.BAA...AAB.....A.A..BB.B.A..A..AAAA..A.......B..ABA.B.B.B..B..B.A..AA.BBAAA.....AAA.....BBB.B...BBA...AB.BAB..BBA..B.A..AA.A.B.BAAAA.ABBBA.BB.B.ABA..AABA.A..B...B..B.B...A.BABB.B.BAA..BB........B.A..B...A....A.AAB...A.A..BAAABAAB.ABABBABA.A....BA...AA...BA.AB....B.B....BB...BABB.B.......B.A..B......BA..ABBBB.B.B.A....BB.BA.AA...BAA..B.......A.B..AAB.B.A...B.ABB.ABA.B.ABBAA..B.ABBBBBA..AA....AAAA..B.AAA.A.AA..A.AA...B.A.AAB..BB.ABAAA.....A..B...A.BBB....B.A..AB.BBABBBA.AABA.BAAB...ABA..AAB.B..AB.ABA...B...AAA....A..AAA.ABA.BA......AAB.ABA..ABAB....ABB.B.B.A...BAAA....BB....AA.A...BBB.BABBB..AB.BBAB.B.A.AAB...BB.BBAB.BBA.A.B.AA.B.B..A.BB.A.....B..BA...B..B.B....BBABA..B.B...B.AB..B.......BB....B..BAB.B...AB..BB.ABBBB..AA.AAAA.....AA.B..AB.BA.A.......BAB.A.AA..A.BB.BA....BBB....BB.AB..B..A.B.......AB..BA..B.BB....B.AB..BA.B..A.A..B..B..AA.B...AA.....B...BA..BBB......BAAAAB.A.A.B.AB...A..B...AB.ABB.A..BA.AA..AB.A.BAB...AA.A.B..AAB...A..A..B..B..BABBA.B.....AB.A.A.AAB..BBAAA..B.AAA.B.ABBBB....A.A..AAA...A.ABBAA....AA.B...BB....A.A.AB..B.A.....ABAAB.B...BA.A.A.B..BAA..BA......B....A.AA.A.BB.A..B..A.B....AA...A..A.....AA...B.........B.....BBB.....B...A.B....B..B.BAAB...A..ABB..BABA...AA....BB....ABA..A..AAABAB...A.BAAB...B.ABBBAAA...A..BB.A.A.BB.B.AA...B..A.BA.A..AABBA.A.B.A..AB.A.B.BBA..BA.B..........A....AABB.B.ABB..BBAA...A....B.A.A.....A.B...A.A......B.....BB..A..BA.BBABAA.B..B..B..BA...AB.ABAA..A..B...BBA.B.....BB.B.BAAA............BB.B.ABBBB...B....BA.A.B.....B.ABB.BB.ABBBAA....B.BBA..BA..BB..........B..A...BBB....BB.A.BA..A"

Returns: "AABAABABABABABAABABABABAABAABABABAABBBABAAABAABBABABABABAABBABABAABABABABAABAABAABAABBABAABABAAABABAABABABABABABAAABAABABAAABBABAAABABAABABAABABAABAABABAAABAABABBAABAAABABABAABABBAABAABBAABABAABAABAABAABAABABABABAAABBBABABABABABAABABABAABABBABBABAABAABAABABAABAAABBAABBABABABBAABABABABAABAABABAAABAABBAABABABAABABABABABABAAABABABABAABABAABABABAABABAAAAAABAABABABABABABABABBBABAABABABABAABABABBABABABABABAABAABABAABBABAABABABABABABAABAABABBABABAABABAABBAABABAABBABAAABABABABAABBAABABBABABAABAABABABABABAABABAABABABABABABABABABAABBBAAABAAABAABABBABAABABAABABABAABABABBABAABAABAAAAABAABABABAABABABAABABABAABAABAABAAAABBAAABABABAAABABAABBBABABABBABABABABABAABBABABAABAAABAABABAAAABABBBAABBABAABABAAABABABABABABAABABABAAABABBABABAABABBABABABAABAABABABAABABAABAABABAABABABAAABAABAABABBABABABABABABABAABAABABABABAABABABAABBABABABBABABABABABAABABABABAABABAABBBBABABAABABABBABABAABAABAABABABABABAAABABAABABAABAABAABBAABAABAABBAABABAABBBBBABAAABABAAAAABABAAAABABAABAABAABAABAABAABAABBAABAAABABABABABABAAABBBABAABAABAABABBABBBABAABAABAABABAABABAAABABABABAABABAABABAAAABABAABAAAABABAABABABABAAABAABABAABABABABABBABABAABAABAAABABABBABABAABABAABBBABABBBABABABBABABAABAABABABBABBABABBABAABAAAABABABAABBAABABAABAABABAABAABABABAABBABABABABABABAABAABABABABABBABAABAABABABABAABAABBAABBBBABAABAAAABABABAAABABABABABABABABAABABAABAABAAABBABABABABBBABAABBAABAABABAABABABABAABAABABABABBABAABAABAABAABABABABABAABABAAABABAAABABAABABABABABBBABABAABAAAABAABAABAABABAABABABAABAABBAABABABAABAABAAABABABAAABAABABAABABAABAABABAABAABABBAABABABAABAABABAABAABBAAABABAAAAABAABBBBABABABABAAAABABABABBAABABAAAABABABBABABABABABAABAABABABABAABABABABABABAABAABAABABABABABABABABABAABAABBAABABABAABABABAABABABAABABABAABAABABABABABABABABABBBABABABABAAABABAABAABABAABABAABAABBAABABABABAABABABBABABABABAABAAAABABABAAABAABABABAABBBAAABABABABBAABAABBABAAABAABABAABABABAAABBABAABAABAABAAABABBABABAABABABABABABABABAAABBABAABBAABBAABABABABABAABABABABAABABAABABABABABABABABBABABABAABBABAAABAABAABAABABABABAABAABAABABABABBAABABABABBABABAAABABABABABABABBABAABBBBABABABAABABAABABABABAABBABBAABBBAABABABABBABABABABBABABABABAABABABAABBBABAABBAAABABAA"
2

"....A.........B.BA.A.....B.......B.BAB............B....A.A....A............AA...........B.A..................BB.A.....B.....AB...A..A.A.....A.......AB......BA...B..AA.....A.....B......BA.....A.A...B........A..A...A......BA..B....B....A.........A..A.....BB....BA.....B........AB....BB.....B...BB...B..........A......BB.BB...A...AAB.....B..B......B....B....B..AB.B.B.BAB.A...B....A..........B........B....B.AB..B..B...A.......B.A..........A..A.A.A......A........BA........A.B..B.........BAB.A......B...A.B.AB.A...........AA.........B.........B...............AA.....B.....B......A....B.AB..B......A....A............AA...BA.BBA....A.B.B............................A...B.BA...BA..A.....BB.A.A......B...A.B..B....BB...BB......B.....AA..B....B.BA.B.B.B.B....B......B.....B........A.A.B.B...AB.A.........A.B.....A.....A...........B...B.BA..........BB.........A.B..B....BB....A......A.A..B.A..A...ABA...B.............A.............AA...AB.B...A..........B.............A.....B.BB...BA...BA....B..A.....A....BA..A.A......B..A..B..B..............A...BB.B.....AB...........B..........A..A...A...A.............ABB..A..A....A...B.A........A.A..AA.B....................A...B....................B....B.A..B.....BBA.A..B..B....A.........BB..............B....B.A....B.......AB.....A.B....B..A...B.....B.A..........AB...............A..A..A.A.....A...A...A.A....B.....B....................ABB........A....BB..A...B.B...B..B......AAA.........A.A..............A..BA..B...BB...A................BB.B...BB.B..A.A...........A...B.B.....B....B.A...........B...............B..BB.....AA.A......B...A..B..A....B..A...AAA..B......B...AA...A...A.......A........AA.....B....A....B.............B..............A.........A...A.B......BA...A.A....BA......B.............B....A.B.......B..B..A......B..B...B..A..A..B...AAB..B....B.....A.................A.B.........A..A..BB...A..B.....BAB...A........B..A.....B..A.A..B..B..............AAB......AA.A.....BA...B.....A......B...B.....A.A....A..B....B.BA.......B.....B.......B....AA............B..BB....AA..B.A...B.....A......A...A..BBA.........AAA......A.AAB.B.A.....AB..AAB.B........A...BA........BAA..A...........A................BBB.BB...........A...B...A.A.AB.......B...A..B..............B..A..A.B....A...A.B.BA..A...BB.A......AAB....BA.A............A...A...BA..................B...B.....B.....B.......BBB..ABAB.A..A.A.......B...AB....AB...A.........B..A.B.......A.B.....A..BA.B..........B.....B....A...A.A..A...AB.A.......B.A.......B..A...B...B.......A.A..................A.."

Returns: "ABABABABABABAABABABABABAABABABABABABABABABABABABAABABABABABABAABABABABABABAAABABABABABAABAABABABABABABABABABABBAABABAABABABAABABAABAABABABABABABABABABABABAABABAABABAABABABABABAABABABAABABABABABABAABABABABABABAABABABABABABABABABAABABABABABABABABABAABABAABBABAABABABAABABABABABABABAABBABABABABABBABABABABABABABABABABABBABBABAABABAABABABABAABABABAABABAABABAABABABABABABABAABAABABABABABABABABABABABABAABABAABAABAABAABABAABABABAABAABABABABABAABAABABABABABAABABABABABABABABABAAABAABABABABABABABAABABABABABAAABAABAABABABABABABAABABABABAABABABABABABABABABABABABABAAABABAABABABABABABABABABABAABAABABABABABABAABABABABABABAAABAABAABBABABAAABABABABABABABABABABABABABABABABABAABABABAABABAABABAABBAABABABABABABAAABAABABAABBABABBABABAABABABAAABABABAABABAABABABABABAABABABAABABABABABABABABABAABABABAABAABABABABABAABABABAABABABABABABABABAABABABABABABABABABABBABABABABAAABAABABAABBABABABABABAABABABAABAABABABABAABABABABABABABAABABABABABABABAABABABABABAABABABABABABABABABABABABAABABAABABBABABABAABABABABABABABABABABABABAABABABABABABABABAABABABABABABABABABAABBABABABAABABABABABABABABABABABABABAABABABABABABABABABABABABBABABAABABAABAABAABABABABAABABAAAABABABABABABABABABABABABAABABABABABABABABABABAABABAABAABABABABABBABABABAABABABABABABABAABBABABABABABABAABABAABAABABABABABABAABABABAAABABAABABABAABABABABAABABABABABAABABABABABABABABAABAABAABABABABABABABABABABABABABABABABABABABABABABABABABABBABABABABABABABBABABAABABABABAABABABABAAABABABABABABABABABABABABABAABABABABABABBABAABABABABABABABABABBABABABBABABABABABABABABABABAABABABABABABAABAABABABABABAABABABABABABABABABAABBABABAAABABABABABABAABABABABABABABABABAAABABABABAABABAAABABABABABABABABABABABABAAABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABAABABABAABABABABABABABABABABABABABABABABABABABABAABABABABABAABABABABABABAABABABABABAABABABAAABAABABAABABABAABABABABABABABABABAABABABABABAABAABABBABAABABABABABABABAABABABABABABABABAABABABABABAABABABABABABABABAABABABABAABABABAABABAABABABAABABABABABABABABAABABABAABABABAABABABABABAABABABABABABABABABABAABABABABABABABAABBABABAABABAABAABABABAABABABAABABABABBABABABABABAAABABABAABAABABAABABABABABAABABABABABABABAABABABABABABAABAABABABABABABABABABABABABABABABBBABBABABABABABAABAABABAABABABABABABABABAABABABABABABABABAABABABAAABABABABABAABABABAABAABBAABABABAAABABAABABABABABABABABAABABABAABABABABABABABABABABABABABABABABABABABABABABABBBABABABAABAABABABABAABABAABABABABABAABABABABAABABAABABABABAAABABABAABABAABABABABABAABABABABABABABABABABAABABABAABABABAABAABABABAABABABAABABABABABABAABABABABABABABABABABAABA"
2

".AAAABABAA.BABA.AAB.BA.ABBAABAAAABAABBBABABBAABBAABABABBB.BBABAABAABBAB.BABABAABABBBBAAAABAABAAABBABB.AAAABBBBAABAABABABABABAAABABABBABBAABBBBBBBAABBABBAABABAA.BABA..ABBAAAABAAABBABBBAAAABBAABABABBBBABABBABAAABAAAABBABBBBBBAABBAAAAAAAABAAAABB.BAABAAABBA.ABAABAAABBAAAA.ABAABABABAABBBAAAABABAA.BBBAABB.AABBBABBBAAABBABBAABBBABBABA.B.ABAABBABAAAABBABABAB.ABAAABABAABBBBBABABBBABBB.AABAABBABAAAABBBAAAABABBBA.AAABBABAAAAABAAABA.BBBBBAAAAABABAAA.BBAAABAAAABAABBABABBBA.BBAABABBAAABAAAABBAB.BABAABBBABABBABBBABABBAAABBABABB.AAAABBBABABA.BBABBAAA.BABBABBBAABBAAA.BBBBAAAAAABAB.ABABAAAAABAABAAABBBBAAAAABA.BABAA.A.AABABBABABA.ABBABABABBA.BBBB.BABABABBAAABAABBABB.AAAABBBBABAAA..AABAAABAAAAABAABBBBBBBABAABBBAABBABAAABBBBABBAAAABAAABBBAAA.BBBBAABBBABAABBBABBBAAAABB.AABAAABBBABABABABABBABAABBAABBBBBBABBB.AABBBBABBBABABAAAB.ABABBABBABAABABABBBBABBBAABA.BABBABBABBAA.ABBBABABABAABBABA.AAABAABABBBAABAABAB.BB.BBBABAAABABBABBBABBBBAAAABBABAAABABBBAAABAAABAB.BBABBBBBABBAAABABABABBB.BABAAB.BAAAAABABABAABBBAAAAABABBBABBABABABAAA.BBABBBBABAABBBAAAABABBABABAABBBABAABBBBABBBBBABBAABB.ABA.AAAAAABABAABABABBABBABBBBBBBBABABBBBAABABABABABAABAA.BBBBBBABBAABABBAAAAABAAAAABBAAAABAABBAAABABAABABAABABBBABABAAAAAABAABB.BBBBABABABAAAABBAABBBABBABBBABBAAAAAABAAABBBBAAAAABBAABBBBAABAABBAAB.BABBBBAAABBBAABABBABABABBBBBAAAABBBABBBBBBAA.AAABAAAABBBBA.ABBBA..AAAAABBABAAAABABBAABAAAAABABA.BBB.BBAAA.AABBBBBB.BBAA.BABBABBAABBBBAAAABAAABBBBAABABBABABAABAAAAABAABBBABBBABBABBBBBABBAAABABABAABBAABA.BABBABBAAAABABAAAAABAAAAABAAB.BAAB.BAABABBBBABBAAAAB.AAAABAABBAAAAABBBBABAABBBABAABABBAABBBBAABAAAABBABAAAABAABBBBBABABBAABBBABABAAAAABBABABAABBBAABAABA.BBAABABBABBBBAAA.AAA.BBAABAABB.ABAB..BBB.BAAAAAABBABBBABBABBABBBBBBBB.AABABAAABBBABABAABBBBAAABBBAAAABAAA..ABAAABAAABAAB.BABAAABBBABAABABBAABAABBBABAABABABAABBB.BABBBBAAABAABAABBAAAAAAABAABBBABBABBABABABBBABBABBABABBABABA.BBAABABAABA.BBBBBAABBAAABABABA.BABABAABBBBABABBBAABBABABBAAAABABAAAABAABBAAABAABBBAABAA.BBAAAA.AABABAABABA.AAAAA.AAAABAAABABBBBABBBAABABBBABBABAABBAABABABABABABAAAAAA.BABAAABBAABAABBABAABBABBBBBAAAABAABBBBABBABBA.BABABBBBABAAABBBABAA.ABABABAAAAABBBBBABABAAB.ABABABBBABAAAABABBAABAAABAABBAAABABABAAABBA.BBABBBA.ABAA.BBAABAAAAABABABAABABAAAABAAABBBABBBBBABB.BABBABB.AABAABABAABBAB..AABBBABBABBBAABBAA.AABBBBAABAAAAABBAABB.BBBAAB.ABAABBABBBAAA.BABBAAABBBBA.BBBABBBBBBA.BABAABABBBBAABBBBABABBA.BAABABABABAA.BBBABBBABBAAABAAAA.AABBABBAABBBAAAAAAABABBA"

Returns: "BAAAABABAAABABABAABABABABBAABAAAABAABBBABABBAABBAABABABBBABBABAABAABBABABABABAABABBBBAAAABAABAAABBABBAAAAABBBBAABAABABABABABAAABABABBABBAABBBBBBBAABBABBAABABAAABABABAABBAAAABAAABBABBBAAAABBAABABABBBBABABBABAAABAAAABBABBBBBBAABBAAAAAAAABAAAABBABAABAAABBABABAABAAABBAAAABABAABABABAABBBAAAABABAAABBBAABBAAABBBABBBAAABBABBAABBBABBABAABAABAABBABAAAABBABABABAABAAABABAABBBBBABABBBABBBAAABAABBABAAAABBBAAAABABBBABAAABBABAAAAABAAABAABBBBBAAAAABABAAAABBAAABAAAABAABBABABBBAABBAABABBAAABAAAABBABABABAABBBABABBABBBABABBAAABBABABBAAAAABBBABABAABBABBAAAABABBABBBAABBAAAABBBBAAAAAABABAABABAAAAABAABAAABBBBAAAAABAABABAABABAABABBABABABABBABABABBAABBBBABABABABBAAABAABBABBAAAAABBBBABAAABAAABAAABAAAAABAABBBBBBBABAABBBAABBABAAABBBBABBAAAABAAABBBAAAABBBBAABBBABAABBBABBBAAAABBAAABAAABBBABABABABABBABAABBAABBBBBBABBBAAABBBBABBBABABAAABAABABBABBABAABABABBBBABBBAABAABABBABBABBAABABBBABABABAABBABABAAABAABABBBAABAABABABBABBBABAAABABBABBBABBBBAAAABBABAAABABBBAAABAAABABABBABBBBBABBAAABABABABBBABABAABABAAAAABABABAABBBAAAAABABBBABBABABABAAAABBABBBBABAABBBAAAABABBABABAABBBABAABBBBABBBBBABBAABBAABABAAAAAABABAABABABBABBABBBBBBBBABABBBBAABABABABABAABAAABBBBBBABBAABABBAAAAABAAAAABBAAAABAABBAAABABAABABAABABBBABABAAAAAABAABBABBBBABABABAAAABBAABBBABBABBBABBAAAAAABAAABBBBAAAAABBAABBBBAABAABBAABABABBBBAAABBBAABABBABABABBBBBAAAABBBABBBBBBAABAAABAAAABBBBABABBBABAAAAAABBABAAAABABBAABAAAAABABAABBBABBAAABAABBBBBBABBAAABABBABBAABBBBAAAABAAABBBBAABABBABABAABAAAAABAABBBABBBABBABBBBBABBAAABABABAABBAABAABABBABBAAAABABAAAAABAAAAABAABABAABABAABABBBBABBAAAABAAAAABAABBAAAAABBBBABAABBBABAABABBAABBBBAABAAAABBABAAAABAABBBBBABABBAABBBABABAAAAABBABABAABBBAABAABAABBAABABBABBBBAAABAAAABBAABAABBAABABAABBBABAAAAAABBABBBABBABBABBBBBBBBAAABABAAABBBABABAABBBBAAABBBAAAABAAABAABAAABAAABAABABABAAABBBABAABABBAABAABBBABAABABABAABBBABABBBBAAABAABAABBAAAAAAABAABBBABBABBABABABBBABBABBABABBABABAABBAABABAABAABBBBBAABBAAABABABAABABABAABBBBABABBBAABBABABBAAAABABAAAABAABBAAABAABBBAABAAABBAAAABAABABAABABABAAAAABAAAABAAABABBBBABBBAABABBBABBABAABBAABABABABABABAAAAAAABABAAABBAABAABBABAABBABBBBBAAAABAABBBBABBABBAABABABBBBABAAABBBABAABABABABAAAAABBBBBABABAABAABABABBBABAAAABABBAABAAABAABBAAABABABAAABBAABBABBBABABAAABBAABAAAAABABABAABABAAAABAAABBBABBBBBABBABABBABBAAABAABABAABBABABAABBBABBABBBAABBAABAABBBBAABAAAAABBAABBABBBAABAABAABBABBBAAAABABBAAABBBBAABBBABBBBBBAABABAABABBBBAABBBBABABBAABAABABABABAAABBBABBBABBAAABAAAABAABBABBAABBBAAAAAAABABBA"
2

".BBBB.BAAABBAA.ABAABBABBAA.A.BBAA.BABBB.A.BABBBBABABABAABABBBBABBBAAAAABABBBBBABBAABBBAAAAAAAAABABBBBABAAAABABABAABBBBBBABBABAAA.ABBABABABA.AAAABABAABABBAAB.BBAB..ABAAB.ABBB...BAABBBBBBAABABAAABBAAAABBABAAAABABBAAAABBBABBABBAABBABB.BBABBAABABBBBA.BBAABABBBAAA.BBBBAABAABAABABBBAABB.AAABAAAAAAAAABBABBAAAABAABBABA.BABAAAABAB.BABBBB.BBBABBB.AAAABBBABB.BBBB.BAA.AABABBA.BBBBAABBBBAAAABABAABBBBBAABBAAABBBBABAABB.A.BABBABAAABABBBB.AAABBBBBBAAABAABAAABBBAABAAB.BAABBBBBAAAAABBBABBAABAABBABBBAAAAABABABABBABBBBAABABABBA..ABBBAABAAAAAABA.BAABBBB.AAABBBBBAAABBBBAA.BAAAAAABBBAAAABBAB.ABBABBBBBBAABBABBAAAA.BAAABBBBA.AAABA.BAAABAAABAABAABBBBABBBBAA.BBABBABAABAB.ABAAAAABABBBBBAAABBABBBABBABABABABAAAAABABB.AAA.BB.ABBBABBBBABAAAABBAAABBAABAAABA..BBAABAAABA.B.AAABABBABAAAAAABABBBAB.ABBABABABAAABBBAABBBAAAAAABAAAAAABABAAAABBABBBBAA.ABAAABABAABABBABBBABABBBBAABBBAAB..BBAABABABAAABBAAAAAABBBBA.BBAAAAAABBBABBBAABBBBAAABB.BBABBAABBBBBABABBAABAABBAAAABBAAABABABAB.AAA.BABBABBABBABBA.BBAAABAAAAAA.B.BBBBAA.AAAB.ABBBABBBBAAAABABBBBABABBB.AABAAA.BABBBABBAAAABABABAABAAABBBAABABBBBBABAAAAAABBBAABBBABAAAABBBA.BBABBBABBB.ABAABAAAABAABAAABBAA.AAABABABBAAABABBABBBAAAAAABBABB.BA.BAABAB..BBBBA.BBABABBBAABABB.AAABAABBBABBBBAAABA.BAABBABABABABBAAABBBAAABBBABBABBBBBABBBAAABAABBAAAAABBABAABABBBBBBBABBABA.BAA.ABBBBABBBBB.AAAB..BAABBBBBAAAABB.ABBAAABABBAAABBB..ABBBBBAA..BAAAAABABBABAAABABAAAAB.AAAAAAABBABBABAABABAA.BAABBABBBABBABBABB.BABABB.BABABABBAAABB.BAABAAABAABBAB.AABAAABBBABABAB.A.AAABBABBBAAAABABAB..ABB.B..BBA.ABABAB.ABABAAAABBAAABA.A.BAABBABBBAABAAABBAABAABABBA.BAABBABAABAB.BAABABBBABABABBBBABAAAAAABB.BBAAAABBAAABAABBBAAABBABABB.AAABAABABAABAAABABBABBB.ABABAAABBAABBBBBABBABBBAA.BA.ABBBAAAAAAABBBAABAAABAAABABBBBB..AAABBBBBBABA.BAABAABB.ABAA.BAAABBBBBBABBB.AAABBABBBBBAA.ABABAABBBABABBBABBAABABABAABBBBBBBBABB.BBBBABAABBBA.BAAABABBAAABAABBABBBAAAABB.ABB.ABAAB.AB.BBBABAAABABBBBBAABBAABBABAABABABAAAABBABABABBABBBBBBAABBBAAAAABBA..ABBBBBAAB.BAAAAABBBA.ABAAABAABBAABABBAAABAAAABBBAAAABBABBABABBBA.BABAAABB.ABABABAABABBBBABBABBBBBAAABAAA"

Returns: "ABBBBABAAABBAABABAABBABBAABAABBAAABABBBAAABABBBBABABABAABABBBBABBBAAAAABABBBBBABBAABBBAAAAAAAAABABBBBABAAAABABABAABBBBBBABBABAAABABBABABABABAAAABABAABABBAABABBABABABAABAABBBABABAABBBBBBAABABAAABBAAAABBABAAAABABBAAAABBBABBABBAABBABBABBABBAABABBBBAABBAABABBBAAAABBBBAABAABAABABBBAABBAAAABAAAAAAAAABBABBAAAABAABBABAABABAAAABABABABBBBABBBABBBAAAAABBBABBABBBBABAABAABABBAABBBBAABBBBAAAABABAABBBBBAABBAAABBBBABAABBAAABABBABAAABABBBBAAAABBBBBBAAABAABAAABBBAABAABABAABBBBBAAAAABBBABBAABAABBABBBAAAAABABABABBABBBBAABABABBABAABBBAABAAAAAABAABAABBBBAAAABBBBBAAABBBBAAABAAAAAABBBAAAABBABAABBABBBBBBAABBABBAAAAABAAABBBBABAAABAABAAABAAABAABAABBBBABBBBAAABBABBABAABABAABAAAAABABBBBBAAABBABBBABBABABABABAAAAABABBAAAAABBAABBBABBBBABAAAABBAAABBAABAAABABABBAABAAABAABAAAABABBABAAAAAABABBBABAABBABABABAAABBBAABBBAAAAAABAAAAAABABAAAABBABBBBAABABAAABABAABABBABBBABABBBBAABBBAABAABBAABABABAAABBAAAAAABBBBAABBAAAAAABBBABBBAABBBBAAABBABBABBAABBBBBABABBAABAABBAAAABBAAABABABABAAAAABABBABBABBABBAABBAAABAAAAAAABABBBBAABAAABAABBBABBBBAAAABABBBBABABBBAAABAAAABABBBABBAAAABABABAABAAABBBAABABBBBBABAAAAAABBBAABBBABAAAABBBAABBABBBABBBAABAABAAAABAABAAABBAABAAABABABBAAABABBABBBAAAAAABBABBABAABAABABAABBBBAABBABABBBAABABBAAAABAABBBABBBBAAABAABAABBABABABABBAAABBBAAABBBABBABBBBBABBBAAABAABBAAAAABBABAABABBBBBBBABBABAABAABABBBBABBBBBAAAABAABAABBBBBAAAABBAABBAAABABBAAABBBABABBBBBAABABAAAAABABBABAAABABAAAABAAAAAAAABBABBABAABABAAABAABBABBBABBABBABBABABABBABABABABBAAABBABAABAAABAABBABAAABAAABBBABABABAABAAABBABBBAAAABABABABABBABAABBABABABABAABABAAAABBAAABABAABAABBABBBAABAAABBAABAABABBAABAABBABAABABABAABABBBABABABBBBABAAAAAABBABBAAAABBAAABAABBBAAABBABABBAAAABAABABAABAAABABBABBBAABABAAABBAABBBBBABBABBBAAABABABBBAAAAAAABBBAABAAABAAABABBBBBABAAABBBBBBABAABAABAABBAABAAABAAABBBBBBABBBAAAABBABBBBBAABABABAABBBABABBBABBAABABABAABBBBBBBBABBABBBBABAABBBAABAAABABBAAABAABBABBBAAAABBAABBAABAABAABABBBABAAABABBBBBAABBAABBABAABABABAAAABBABABABBABBBBBBAABBBAAAAABBABAABBBBBAABABAAAAABBBABABAAABAABBAABABBAAABAAAABBBAAAABBABBABABBBAABABAAABBAABABABAABABBBBABBABBBBBAAABAAA"
2

"A.BABBBB.B.ABAAAAABBBAAAAAAAABBBBBBBABBABAA.BA.ABB..BBBBAABBAAABBAB..AA.BBAABAAB.BAABAB.ABA.AAA.BBB.ABB.A..BBBAA..AAABBBA.B.BABBAA..BBA.AABBAA..BBBBBA.B..A.BA.ABBABAAB.A.BABBBBBABBB.B.B.BABBABA.AABB...AAAA.AB.AA..BBABA..A.BABA..B.AB.A.BAABAB.A..B.BAABBBBBA..BBBA..AABABA.A.A.BA...BAAAAA.AAAAABB.B....A.BBA..BA.A.BA.A..A.ABB.BABB..BBAAABA.AAABBABBB.BA..A.BA..AB.B.BAB.BBA..B.BBAABB.ABABABA.BBAABB.A.B..BBBBAA.BAB.B..A.A.ABBAA.BB.A.BBA.AAA.B.A.B.B.AABABA.BA..B.BA..A.BABAABA.BABA..ABAAA.B.BAABAAAAAA...A.B.BBBBA..BABBBBB.AB.BAB.B.AB.BAA.A.BBA..BABBAABABBAAB.B.BBAABB.AA.BBBBABA.B.BBBAAA..B..ABBBAA.AB.BBA.A.B.BAB.A.B.BBBBB.AAB..B.A.AA..AAABBBA.AABBAAA...BA.B.BBAB...B.ABABA.BABB.AB.B.ABB.ABB.ABAAB.AB.AB.BABABB...BB.BBB.AAAABBB.B.BAA.ABABABBB..B.BAB.AB.AB.BBBAABAAA.BAAB.A....BBBABB..AABBAAAAABAA.BAAA..BBABBBBABBBABBABB..ABABBBABABAB..B.AABBA....ABAABA.B.BA.BBABBB.ABBBBAAABA.BAAB...ABABBBBAABABAA.B.BB.AB...BABA.AAB.A.BAABB.B.AAA.BAAAB.BBBB...B.B..BAAA.B.B..B.AABA.BB.AB..A.BBBAB...B.AB.A....AAAA.B...AABB..ABBBAABB.BAB.BB.A.BBA.BA.A.AA.BAB.BAB.BA.ABA..BB.BAB.B.AB.B..BA.A.B..BABBBAAA.B.A.BABAB.AABBAB.BA.ABA....B..AB.A.BAABB.BB.A.BABA.AB..AB..B.BB..B..BBAA.AABAABBBB.A..AAAAA.AABBBBBAABBBA.BBBA..AB.ABBBA..BB.B.BA.AAABB...AABAABAA..A..B..AAAABBB.BA.B.ABA..A..AA...A..A..B..BBA.BBAA.BBBBAB.BABBBB.BB.BB.ABAAAA.AAB..AA.BAB.BAABBBBBA.ABAA.BAAB.ABBBBBA.ABA.BABBBB.AAABAAB.BA..BABBA.BA.B..B..BB.BA.ABB.BB..BBBBAA..B..A.AB...A.AAA.BB.AAAA.ABA.A.......ABABBBABA.B.ABA...B.A.A.AABAA..AAB.B.AA.AB.AAA..AA..A......A..AA.ABAA.AABBAB..BB...BBAB.A.ABB..B.BA.AA.BBABAAB.A.ABBAA..BB.B.BBBAAB.AA.B.AAAAAB..ABBAB.A.A.BBBBABB.AAB.B.BAB.A.B.AB.AABA.BBAB..AABBBABA.BB.AA.B.BABA.B.ABBBAAAB.BBB.B...A..ABBAABBA.B.A.ABBB..BBABB.AAAABA.B..B.B.ABBBB..BB...B.BAABB....AB..A.B..A.B.ABAB..AA.ABB.BAA..A..BB.BB.B....B.A.ABB...AAA.A.BAABABB...AB..BBB.BBB.BA..AABAAA.B.BAA.A.ABB.AAAAAAA.ABAAA....A..BA..B.B...BAABA..B.....B..AAB......A.BA.BBABA.ABBA.BB..AAA.AB.AAB..AAA.BAAAA.BBBBBBA.ABBBAB.BAA..AB.A..AB.BABBAA.BA.BBABAAABBAABA..B.A.BBBB.AA.ABBAAAA.BAAABBB.BBAAAA.BABBBAB..BAAA.BB.AA.BA.ABABABBBABAA..AAAAAAAABBAB.A.A.BAA..B.B..BA....BBBA..AA.ABAA.B..AAAA.....BAAB.B.ABB.A..AAA..ABB.BA..BA..AB.AA.BA.B..B."

Returns: "AABABBBBABAABAAAAABBBAAAAAAAABBBBBBBABBABAAABABABBAABBBBAABBAAABBABABAAABBAABAABABAABABAABABAAAABBBAABBAABABBBAABAAAABBBAABABABBAABABBABAABBAABABBBBBAABABAABABABBABAABAAABABBBBBABBBABABABABBABABAABBABAAAAABABAAABABBABABAAABABABABAABAAABAABABAABABABAABBBBBABABBBABAAABABABABAABABAABAAAAABAAAAABBABABABAABBABABABAABABABAABABBABABBAABBAAABABAAABBABBBABABAAABABAABABABABABBABABABBAABBAABABABAABBAABBAAABAABBBBAAABABABABABABABBAAABBAAABBABAAAABAAABABAAABABAABABABABABAAABABAABAABABABAABAAAABABAABAAAAAABABAABABBBBABABABBBBBAABABABABAABABAABAABBABABABBAABABBAABABABBAABBAAAABBBBABAABABBBAAABABABABBBAABABABBABAABABABAAABABBBBBAAABAABAABAABAAAABBBABAABBAAABAABAABABBABABABAABABAABABBAABABAABBAABBAABAABAABAABABABABBABABBABBBAAAAABBBABABAABABABABBBAABABABAABAABABBBAABAAAABAABAABABABBBABBABAABBAAAAABAAABAAABABBABBBBABBBABBABBABABABBBABABABAABAAABBABABAABAABAABABAABBABBBAABBBBAAABAABAABABAABABBBBAABABAAABABBAABABABABABAABAAABAABBABAAAAABAAABABBBBABABABAABAAAABABAABAAABAABBAABABAABBBABABABAABAABABAAAAAABABAAABBABABBBAABBABABABBAAABBAABABABAAABABABABABABABABABBABABABAABABAABABAABAABABBBAAAABAAABABABAAABBABABABABABABABABABAAABAABBABBAAABABABABABABAABABBAABAABBAABAABAABBBBAABAAAAAABAABBBBBAABBBAABBBABAABAABBBABABBABABABAAABBABAAABAABAABAABABABAAAABBBABAABAABABAABAAABABABAABABAABBAABBAAABBBBABABABBBBABBABBAABAAAABAABABAAABABABAABBBBBABABAAABAABAABBBBBABABAABABBBBAAAABAABABABABABBAABAABAABAABBABABABBABBAABBBBAABABABABABABAABAAAABBAAAAABABABABABABABABABBBABAABAABABAABAABABAABAABAAABABAAABABAAAABAAABAABABABAABAAABABAABAABBABAABBABABBABAABABBAABABABAAABBABAABAABABBAABABBABABBBAABAAAABAAAAAABABABBABAABAABBBBABBAAABABABABAAABAABAAABAABBABABAABBBABAABBAAAABABABAABAABBBAAABABBBABABAABAABBAABBAABAABABBBAABBABBAAAAABAABAABABAABBBBAABBABABABAABBABABABABAABABAABAABABABAABABBABAABAABABBABBABABAABAABABBABAAAABAABAABABBABAABAABBBABBBABABAAABAAAABABAABABABBAAAAAAAABABAAABABAABABABABABABABAABABABABABABABAABABABABAABAABBABABABBAABBABAAABABAAABABAAAABAAAAABBBBBBABABBBABABAABAABAABAABABABBAAABAABBABAAABBAABABABAAABBBBAAABABBAAAAABAAABBBABBAAAAABABBBABAABAAAABBAAAABABABABABBBABAABAAAAAAAAABBABAABAABAABABABAABABABABBBABAAABABAAABABAAAABABAABAABABAABBAABAAAABAABBABABABABAABAAAABAABAABA"
3

"........BAB..B.........C........A........................B................A.........C.....C..................C....BA.........C.....C.B.A.C.............A.............B............C.....C..B...........................B.B..........A..A.....................C........A....A....C....B...................................B............B.....C.................................A.................A.C........B.........C......C..CB.........C..........C.....A.....................A..B........C.....ABC..A..B.......A...C.............A.......B............C....A..........A.................B..........C........B...B..B...............................B.......B...........................C..............B......C..............................B....A....................A....................B......................A..BC........A.....B.....C......................A.................C.....B..................B.B.....B.......A........C............BC.............................B.B......A..........B................................A.........B..............C.C.............B...B......A..C........A...........C..........AC..............A...............C...........AB......C......C..............C...........A...CA......C.B.......B........BB.................A..................A........A.....A.......B...A...........BAC....B......C.....CB.........................BA........C...B.......................AB....C.....B..............C.....C....................B........................A....A..............A.......CA..A..C.C...........A.....A......................C..B.BA....B.......C.............B..............B...........B......BC........C..........A...............C.......B..........B...........A................ABB..................C....C....................A..........C.......C......................CA....................................A.....AA...........................................A........................A........B.C.AC.A....C....A...............B.A........................A..........B......A..................C...B.B........B...................................CB...B......A..........B.....B..C.............................CA.A......B............C...C......A................................B......B....................A.BA................A..C."

Returns: "BABABABABABACBABABABABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABACABABABABABABABABABCABACBABABABABABCABABACABCABCABABABABABABCABABABABABABACBABABABABABABCABABACACBABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABCABABABABABABCABABACABACBABABABABABABABABABABABABABABABABABABABABABABABACBABABACABABABABABABABABABABABABABABABABCABABABABABABABABABABCABABABACBABABABABACABABABCABCBABABABABACABABABABABCABABCABABABABABABABABABABABABABABABABABCABABCABCABABABABABABCABABCABABABABABABCABABABACBABABABABABABCABABABABABABABCABABABABABABABABACBABABABABABCABABABACBABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABACBABABABCABABABABABABABABABABABABABABACBABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABACBABABACABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABACBABABABABABABABCABABABABACABABABABABACBCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABCACABABABABABABABABABABABABABACABABABABABABABABABABCABABABABABACABABABABABABABABABABABABABABABCABABABABABCABABABABCABABABCABABABABABABABCABABABABABCABABCABABABACABABABABABABABABACBBABABABABABABABABCABABABABABABABABABCABABABABCABABABABABABACBABCABABABABABACBACABACBABABABCABABACBABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABCABABABCABABABABABABABABABABCABABACABABABABABABABABABACBABABABABABABABABABABABABABABCABABABABABABABCABABABABCABCABACACABABABABABCABABABABABABABABABABABABABABACACBABABABABABABABACABABABABABABABABABABABABABACBABABABABABABABABACBCABABABABCABABABABABABABABABABABABABCABABABABABABABABACBABABABABABCABABABABABABABABCABBABABABABABABABABABCABABCABABABABABABABABABABABABABABABACABABABACABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABCABABABAABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABACBACBABABACABABABABABABABABABACBCABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABACABABABABABABACBABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABACABABABABABABABABABABABCABACABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABACBABABABABABABABABCABACA"
25

"TSHOXLVO.DAS..RDOHSFWGKT.WLB.JPPQU.WPXWN.WKB..DTOQXEHBHTEDKN.MHNW.NVHOEBGULKDLCMW.DRRTUIAA.NIKOQEDFJUXTTQL.FS.FRHORRC.CQPY.TWA.NETJR.BTDS.JOSGKFBFCSHJ.VJ.YUC.LYBU.BAQSVVG.YHNL.OJSUH...WE..BXA.JVHWKQ.FNMXDAR.QL.KABTBNPMI.TJHWOOK.KKQCX.RP..ML..UMD..E.E.BPF.PH.TIOIRV.KOONAHKTQSK.Q.PJUFIQ.LFGYSFN.HDKOEI.NFHFB.K.EIULX.JFGKYYYCAJC..COPY..JAYG.F.NFCR.LQS...POUILVUQPBTNAN.XIBDQORFC.QVBRJ.VUIFKF.AVNRPQXUUAOIFJJUPQBWGF.DAGFFBF.F.F.YXG.RQYEG.ODJCLO.G..QQ.TGJ.WKXEVCLW..HXTK..SABEUTSDJN..XWDE.OOTFQNHTXOJ.ECDSTGHB.SIHSPAP..WYSQDBS.QKPYI.KUD..OM..UANGLB.CSILIRMPOHOBCMTTDAGG..VCCLJRROWAI.WKI.P.V.SOM.N..CXQVJXDLKGBTVSCYOGHWGQMTWNFE.DTQD.H.S..FST.MFCP.D.BY..GXOBNYECTOKYJCIQM.YD.QRLU..QHKM.GGJVLV..PCJ.Y.QITJMEEAS.HLE.VI.YTOQSXET.E.CD.BOMOPM.QNBJMVHASST.DOWMSG.GLJWTTSFKA.TEOFNRFEJYXIHOEEMMOQVYOE.EBDP..TNDXR..MM..ED.YYLUK..OHFABYM.S.TKKALLKI.Q..KAWDFKBS.KFTON.YA.QH.EU.E.X...MHOIPXW.Y.RLNLSVIUE.FNYFKU.WAHANAETBRKH.VVCEMKSQ.WWVWOVOK.NV.TSVBATBVD..P.LLFANCWAQAD.KU.UBNTJF.EUGKK.V.UXSPLFF.QDTN...JRI..LEQR.FTGRTSMVTNAUY.YULN.OBXIDXHHS.RRBSAQJYP.US.A.Q..DPHSMFLMB.V.CPTOVEG.JY.I.RYA..T.SXX..ET.R.OQJBIQ.V.BQHLISQ.NJUHUBHEW..EY.P.B.UIRF.ADBUH.CS.ULUBHHCFPTAMKY.RPGC.CFHXXUBJSI.BSR..XSOONW...DGEG.VGEYQY.MRWQEAG..JVNXFTMNO.QQRNCNCGJ.N..KBFE.IGCP.ELQ.FGF..A.CXWSGUCQ.NXMT.DPYLE.SOPJMVOLS.P.KNQBWLK.C.LR.DWHRNHABWCV.L.MJDYUIWAFPNJYDF.DGL.A.MHGK.UBGPBXOPIYGRJ.JPTWULSMVFQDTBXVJTOIXAWSCC.JYUIGMQRFAUSBO.GNBEWTGQI.VWNVT..WM.MXSUQTVAJC..MIFNDWKWU.HJ.UMYHXTFDLF.EKLD.U.EAUYMGL.L.CKXMAIFK..MKKTI.KLCO..LHXVYMPCTILCWIUP..THUYRALXS..YR.R.P.IYYBMN.HBJWXRMTTNDHAIWI.EY..OPGTYLSVFSCGAXT.AR.MC.EN.WIDQCRDIN.GLL.GVAU..QENCDWAY.SXGKLM.EOIO.CG.ILTR.JVCCR.G.OOWA.T.F..ELKWKY.QY.YKHX...MBKY.THAHPTVF.K..W..QKDQ.HSLYNXJE.DWDV.IRVC.ETYYTMYGFSOAIW.AGIMYSK..BCGO.SOSMHGWXRQRUHT..OMEYYHREO..KVP.U...XTPAKX.BHGDXYOOVT.E.C..MF.ENA.KMJ.I.RKPEC...VQHU..ESSQQW.DVAG.V.T.X.KG.AGJVM.GQDFVDJXUADDEAMVLRQPPJYMRCJB.RXLGRHRXHLPWN.TBSICSR.QU.QSGYLNQWASNYVHVJOCXVR.UJGOE.YJKVMGPHAGBA.DEGNBN..RT..EMTMWG..BAWOOOC.P.THNYTRT.L.IVD.JDWGMIFRWIWV.AOW.VHF.UJWHKVXVS.XBJBHEJBAQATMEWQCATVNRHC..JEXIFR.GB.V.KJW"

Returns: "TSHOXLVOADASABRDOHSFWGKTAWLBAJPPQUAWPXWNAWKBABDTOQXEHBHTEDKNAMHNWANVHOEBGULKDLCMWADRRTUIAABNIKOQEDFJUXTTQLAFSAFRHORRCACQPYATWABNETJRABTDSAJOSGKFBFCSHJAVJAYUCALYBUABAQSVVGAYHNLAOJSUHABAWEACBXABJVHWKQAFNMXDARAQLAKABTBNPMIATJHWOOKAKKQCXARPABMLABUMDABEAEABPFAPHATIOIRVAKOONAHKTQSKAQAPJUFIQALFGYSFNAHDKOEIANFHFBAKAEIULXAJFGKYYYCAJCABCOPYABJAYGAFANFCRALQSABAPOUILVUQPBTNANAXIBDQORFCAQVBRJAVUIFKFBAVNRPQXUUAOIFJJUPQBWGFADAGFFBFAFAFAYXGARQYEGAODJCLOAGABQQATGJAWKXEVCLWABHXTKABSABEUTSDJNABXWDEAOOTFQNHTXOJAECDSTGHBASIHSPAPABWYSQDBSAQKPYIAKUDABOMABUANGLBACSILIRMPOHOBCMTTDAGGABVCCLJRROWAIAWKIAPAVASOMANABCXQVJXDLKGBTVSCYOGHWGQMTWNFEADTQDAHASABFSTAMFCPADABYABGXOBNYECTOKYJCIQMAYDAQRLUABQHKMAGGJVLVABPCJAYAQITJMEEASAHLEAVIAYTOQSXETAEACDABOMOPMAQNBJMVHASSTADOWMSGAGLJWTTSFKABTEOFNRFEJYXIHOEEMMOQVYOEAEBDPABTNDXRABMMABEDAYYLUKABOHFABYMASATKKALLKIAQABKAWDFKBSAKFTONAYABQHAEUAEAXABAMHOIPXWAYARLNLSVIUEAFNYFKUAWAHANAETBRKHAVVCEMKSQAWWVWOVOKANVATSVBATBVDABPALLFANCWAQADAKUAUBNTJFAEUGKKAVAUXSPLFFAQDTNABAJRIABLEQRAFTGRTSMVTNAUYAYULNAOBXIDXHHSARRBSAQJYPAUSBABQABDPHSMFLMBAVACPTOVEGAJYAIARYABATASXXABETARAOQJBIQAVABQHLISQANJUHUBHEWABEYAPABAUIRFBADBUHACSAULUBHHCFPTAMKYARPGCACFHXXUBJSIABSRABXSOONWABADGEGAVGEYQYAMRWQEAGABJVNXFTMNOAQQRNCNCGJANABKBFEAIGCPAELQAFGFABABCXWSGUCQANXMTADPYLEASOPJMVOLSAPAKNQBWLKACALRADWHRNHABWCVALAMJDYUIWAFPNJYDFADGLBABMHGKAUBGPBXOPIYGRJAJPTWULSMVFQDTBXVJTOIXAWSCCAJYUIGMQRFAUSBOAGNBEWTGQIAVWNVTABWMAMXSUQTVAJCABMIFNDWKWUAHJAUMYHXTFDLFAEKLDAUAEAUYMGLALACKXMAIFKABMKKTIAKLCOABLHXVYMPCTILCWIUPABTHUYRALXSABYRARAPAIYYBMNAHBJWXRMTTNDHAIWIAEYABOPGTYLSVFSCGAXTBARAMCAENAWIDQCRDINAGLLAGVAUABQENCDWAYASXGKLMAEOIOACGAILTRAJVCCRAGAOOWABTAFABELKWKYAQYAYKHXABAMBKYATHAHPTVFAKABWABQKDQAHSLYNXJEADWDVAIRVCAETYYTMYGFSOAIWBAGIMYSKACBCGOASOSMHGWXRQRUHTABOMEYYHREOABKVPAUABAXTPAKXABHGDXYOOVTAEACABMFAENABKMJAIARKPECABAVQHUABESSQQWADVAGAVATAXAKGBAGJVMAGQDFVDJXUADDEAMVLRQPPJYMRCJBARXLGRHRXHLPWNATBSICSRAQUAQSGYLNQWASNYVHVJOCXVRAUJGOEAYJKVMGPHAGBABDEGNBNABRTABEMTMWGACBAWOOOCAPATHNYTRTALAIVDAJDWGMIFRWIWVBAOWAVHFAUJWHKVXVSAXBJBHEJBAQATMEWQCATVNRHCABJEXIFRAGBAVAKJW"
3

"CBB.BAAC..CC..B.A.A.B.....A......ACC...C.C.CA.B.BAA..B.B.BA...C.B.....CAB..CC...BC.A.C...B...BBA..CCCA..BAB.B..BBAB....AA.A.BC.CBB......A..CA.A.CBAC.B..A..C...B.A...A..AB...AC....CB...B....C..CCCBCBC..CBC.CC..BC..A.CB..C.AA.....C....BBC...C...BBB.B.CC.AA.C..CC.A.B.C.B.AAACA.B...AB....C.C..ABC...BA.C...C..AC..BAA.A..B...ACAC..C.A.BB..BAB..B.C.A..C..B......CB.C.CC...B......BA.C.A....B.CAA..AABCC...CB..C.CCAACACCACC..CCA....C..AC...AB...A.ACB..C...A...B..BC.BCBC.B..C.B.A.CAB....A..A...B.....B.....C...A.C.A.CC.....AA.B.C.......ACC.....CAB.CB.C......BC....C....C.C...A..ABCACAC.C.B..CB.B.AAC.AC..B..C..A.A.A..BBCAB..CBC..B.BB.A.CACC..B.C.CC..CA..ABA.A.C..B..C..CAACCC.ACC..CBAB.B..CC.CAA.C.C.B.B.C.C.A.CA.BB...CA..CB.C.CA.C......B..A.BA...B...C...C..ABAB..B..CB..AAC.....B....CB.CCB.....C.BAC..A..BB..AC.BAC...BC....BB..B.A..B....C.B.B.C.ABABAA..AAA.B..C.ABB.BAB.A.CA...BB...CC..CAA.....B.CBBCC..C..A.B.A...C..A.....AB.ACA...B..BCB..B..A..A.A.C...CBBC.C.B......CA.C.....AC...BA.ABBCC..B.BC...C.A...BBB..CA..C.BA......B.AB.BB...CC..A..CAAB...C.A..A.......B.CB...B.C...CAC.AB.AA..CA..C.AABA.CA.AA..CBA.A.C...AC.CA......CA..BB.CCB..A.....C.ABCBC.A.A...A..CA..AA.C.B.A.CBA..C......A.ACBAAAC.B..A..B.ABB.AB..B.ACB.A.B.B.B.ACC..A.A........CACBB.A.C.......B.BC.AAAC....A.CCB...A...B.CC..C.C.CA.BC......A..B...ACCA..BBB.CAABA.ACAC.C...C.A..ABA.C..C.BC.CA.....ABB....B....A..ABA.C....CC...B....AA..BB.CC...B..C.AACAC..A.C.A..ACCA...A.C.B.AC......AC.C..CA.B..ACB.A.C.B.A..B.BBB.B..B.B...BA.A..AC...ACAB...A.CC.B.C..A..B..CA.BC..CBB.C..C.C..C..CA.A.B.B.....A...A...A..CA.BBAB.CACA..ABA..A.CAA.BAA..BB.CCCC.B....BAC..A.AAA..BBBB...B..CAA.AB..C..BB.CC..AC.A....B.A...CB.CB..A.......ABBABB.CB..B....BC..CC.A.CB.B.B.B.....CA...ACABA.A.BAA.A.....CB..C....AA...A..BB.....CBB.AABCB....BCAAC.C.CCBCBB..CA.....B..ACA...B.....B.B.........C.B.CA.A......B.BACACBBA..CBCA....A.B...AA.A.AA.C.A....CBB.BC...BC.B..A.C..B.BCC...ACC...C..ACA...CA.....CC.BC.BB........CB.A..A....BBBCCBA.BA..CCA.CBA.BB.C..C.A.CC.AA....CA.ACB....CACBACA..BC.B.C..C.A....B...CB..AA..CCCB.CB.A.BCACB.BA.A.C.ACCBA....CCB...CA.C..CBB...C.ABA.ABBC.BA..C.A.AA.A.B..B..B...AB...C...CAAAC.CA...ABAC..BC..A.CC.CBACCCBA...C.C.BBA...A...BA.AC.CB....CBB..B.....CA.BA..BCCCBCBA.AA..B.CC.B...C.....CB.BABB.BBAACA.C...A.CC...ACC.BB..C.A..BAAAA.CCC.AAACCCC.BCB...C.A...CB.BC.AB.B.CB.....C..CAAC...C.A..A.CCB...C.AB..B..BBC.AC.CCA.CC.CBBB..BC...B.C...CA.....BB.CB..CAA..CB....C.BBAB.B...A..A.B..ABB.AB..B"

Returns: "CBBABAACABCCACBCABACBABABCABABABCACCABACACACACBABAABABABABABABCABABABACABABCCABABCBABCABABABABBABACCCABABABABACBBABABABAABACBCACBBABABABABACABABCBACABABABACABABCABABABCABABCACABABCBABABABABCABCCCBCBCABCBCACCACBCABABCBABCBAABABABCABACBBCABACABABBBABACCBAABCABCCBACBACABCAAACACBABCABABABCACABABCABABABCABACABACACBAABABABABCACACABCBACBBACBABACBACBABACACBABABABCBACACCABABABABACBABCBABABABACAABCAABCCABACBABCACCAACACCACCABCCABABACABACABCABABCABACBABCABCABACBACBCABCBCABABCABCABCABABABABCABACBABABABABABACABCABCBABCCABABCAACBACABABABCACCABABACABACBACABABACBCABABCABABCACABCABCABCACACACABABCBABCAACBACACBABCABABABABABBCABABCBCACBABBCABCACCACBACACCABCABCABABABCACBABCABCAACCCBACCABCBABABABCCACAABCACABABACACBABCACBBABACABACBACACABCABABACBABACBABACBABACABACABABABACBABCBABAACABABABABABCBACCBABABACABACABABABBABACABACABABCABACBBACBCABABABABCABABACBABABAABCAAACBABCBABBABABCABCABACBBABACCABCAABABACBACBBCCABCABACBCABABCABABABABABCACABACBACBCBACBABABCABABCABACBBCACABABABABCABCABABCACABABABABBCCACBABCABACBABACBBBABCABACABABABABABCABABBABACCABABACAABABACBABCABABABACBACBABABACABACACBABCAABACABACBAABABCABAABACBABABCABCACACABABABACABABBACCBABABABABCBABCBCBABABABABACABCAABCABCABCBABACABABABABACBAAACABABABABCABBCABACBCACBCACBABABCACCABABABABABABACACBBCABCABABABABABCBAAACABABABCCBABCABACBACCABCACACACBCABABABABABABCACCABABBBACAABABACACACABACBABCABABCABCABCACABABABABBABACBABABABCABABCABABCCABABABABAABABBACCABABABCBAACACABABCBABCACCABABABCABCACABABABACACABCACBABACBCABCABCABABABBBABACBABABABABABCACABCACABABCABCCABACABABABABCACBCABCBBACABCACABCABCABACBABABABCABABABABABACACBBABACACABCABABCABCAACBAABABBACCCCABABACBACABABAAABABBBBABABABCAABABABCACBBACCABACBABABABCABABCBACBABABABABABABBABBACBACBABACBCABCCBABCBABABABABABACABABACABABACBAABABABABCBABCABABAABABABABBABABACBBCAABCBABACBCAACACACCBCBBABCABABACBABACABACBABABABABABABABABACABACABABABABABABACACBBABACBCABABCACBABCAABABAABCBABABACBBABCABABCABABABCACBABCCABCACCABACABACABABCABABABCCABCABBABABABABCBCABCABABABBBCCBACBABACCABCBACBBACABCBABCCBAABABACABACBABABCACBACABABCABACABCBABABABABACBABAABACCCBACBCACBCACBABABABCBACCBABABACCBABACABCABCBBABACBABABABBCABABACBABAABACBACBACBABCABABACABACAAACACABABABACACBCABABCCACBACCCBABABCACABBABABABACBABACACBABABCBBACBABABACACBABABCCCBCBABAABABACCABABACABABACBABABBABBAACABCABCABCCABCACCABBABCBABABAAAABCCCBAAACCCCABCBABACBABABCBABCBABABACBABABACABCAACABACBABCABCCBABACBABACBACBBCBACACCABCCACBBBACBCABABACABACABABACBBACBABCAABACBABABCABBABABABCABCACBABABBCABACB"
3

"BBCACCCACABBBAABAACABCACBCACBCCABCCBBAABABACCBCBAABABACCABA.CAABCBCBACBAC.BBCAAABACBBABACACCACBAAAACBBABAACBCBBAA.BBCBBCBCBCBBAAAABCCCBABABABBAAABACAABCCAABCBAABBAAABBCCAAACCCBAABACBACBBABCCABBCBACCACCCCBBABABCBAACBBACABCAACCACAAAAAABBACCCCCBCACBBBABBCBABBABCCCABABACCBBCCCAAC.CACBABACCCAACBBCBCABBABCBABBCBBABBCAACCCCAAACBAAAACACAABCCACCACCBCBCCACBCAAAABAABBCBACCAACBBACABBAAAAACCBBAABACBCBAAABCCACBCBCBBBCAABAACBBA.BACACABABACABBBAABBBBCBCBACACCABCBCCBCCABCCCCCBBBCCCAABBCBBCCCBABCCCCBCCBACBBCAABACCBABBBCCACABCCCCAABAABAACCCBCBAABACBCCCCABABBBAB.BABACCCABAA.CACBBCBCBAACAACCBAAABBACCACAABCCACCCBACCBAACACBBCABCBBACAAACCCCAABCBABBAABCCCBCCBBBBABCACCCCCABBCABBCAAACCCCACCACCAACCCCBBCBA.BCABCCAAAAAAABBACBBCACBABABCAA.CCBBABBBAA.AAABBACABACBCABBBBAAAACCCCBACCCBABACBACABAC.ACBCBBAACAAAAABBCABBCCBBAACBCAABACBCCCCCCCBAACABCACCBABBBBAAABBAACACABBBCCBBACCCCAABBCBCAA.CCBCCBBCBBBAB.BACABA.CCAABCBCBCCBAAAAABABCA.ABCCBBBCCCCBBBAAACAACAAABCCABAABABCCABBAAAAACBCCAABCABCAAAABCBACBCBBACCACAACACCABBABABCABAAACCABACCABABBAAAABBCCBC.CAACACBBACACBAACACCCBBABCCAABAACACBBCABAABBACBBBACBABBBACCBCCCCBACACBACBABCACACCCCCACCAABBAACCACBCACBCBACAACBBBCACCBACCBCCBBCACBCBCAACCAAABAAABCABCBBBBCBACCABCBCBAABBACAABAAA.AACABCBBCACBABBCCBABBCBABBA.A.ABABBABAACAACBBBCBBCAABABBACAACACAAABAAABABCBCCABACCABCBCC.CBBAAABCCABCCBBCBABCCACCCCCABAAABAACBBACCBBCBCCCBAACBCBCBCCBCAACABBBACBACBACCCABAABAABCCBBCAABA.BBBBAACCAAACBC.CACCB.BBCABCACAAABCACBACBAABCBABCCABABACCCCAAABCBBBBCCBBAB.BAACBCABBCACCBBCCABCCBAAACACCACACCBBCAC.ACBCBABCABACABCBCACCCBABCACBCABACAABACCBACBCC.ACAABAABABCCBABBAABBACABCBCBBABCCBABACAACBBBBCAACBCABCBBBA.CBACABBABACBCBBAABCBCCBBBBBCACABCCCCBCBCCBAABBBB.BCBBBCCBABACACBCABABAAAABBCBBCAABACBCBACAAAACBBCACABBCC.CCCBACCBBBBCBACCCBBCCC.CA.CBBABBBBCCABCAAAAACBAACC.CACBBCCCACB.ABBCCACABCCCBABCCBABCBCCACBACAACABACBBCBCCCBCBCBCABCBCBBACCCCAACABACBABBBAAA.CABABCBBACACCAABBABBCCABBBCCCCABACACCCB.AACABBB.CBCBCCBAABACCACCA.BAABCABBCCBCBBABCBCCBACCACBCBABBACBABABCCCABACACBCBACAAAACBCBBCBCBBCCBCBB.BBC.BBCBAAABBCBC.CCCAABBBCBCACCAAACABAAACCCAACCACABBA.CBACC.BAACACBBBCACBCBBBAACCBBBACBCCAABCCABCCAABBBCCACABCACCCBB.A.AAABACACCCBAABCCABACCCACBABBABACCCACCCBABAACBABACCCAABCACABBBBBCCACCB"

Returns: "BBCACCCACABBBAABAACABCACBCACBCCABCCBBAABABACCBCBAABABACCABABCAABCBCBACBACABBCAAABACBBABACACCACBAAAACBBABAACBCBBAACBBCBBCBCBCBBAAAABCCCBABABABBAAABACAABCCAABCBAABBAAABBCCAAACCCBAABACBACBBABCCABBCBACCACCCCBBABABCBAACBBACABCAACCACAAAAAABBACCCCCBCACBBBABBCBABBABCCCABABACCBBCCCAACACACBABACCCAACBBCBCABBABCBABBCBBABBCAACCCCAAACBAAAACACAABCCACCACCBCBCCACBCAAAABAABBCBACCAACBBACABBAAAAACCBBAABACBCBAAABCCACBCBCBBBCAABAACBBACBACACABABACABBBAABBBBCBCBACACCABCBCCBCCABCCCCCBBBCCCAABBCBBCCCBABCCCCBCCBACBBCAABACCBABBBCCACABCCCCAABAABAACCCBCBAABACBCCCCABABBBABABABACCCABAABCACBBCBCBAACAACCBAAABBACCACAABCCACCCBACCBAACACBBCABCBBACAAACCCCAABCBABBAABCCCBCCBBBBABCACCCCCABBCABBCAAACCCCACCACCAACCCCBBCBACBCABCCAAAAAAABBACBBCACBABABCAABCCBBABBBAABAAABBACABACBCABBBBAAAACCCCBACCCBABACBACABACBACBCBBAACAAAAABBCABBCCBBAACBCAABACBCCCCCCCBAACABCACCBABBBBAAABBAACACABBBCCBBACCCCAABBCBCAABCCBCCBBCBBBABABACABABCCAABCBCBCCBAAAAABABCABABCCBBBCCCCBBBAAACAACAAABCCABAABABCCABBAAAAACBCCAABCABCAAAABCBACBCBBACCACAACACCABBABABCABAAACCABACCABABBAAAABBCCBCACAACACBBACACBAACACCCBBABCCAABAACACBBCABAABBACBBBACBABBBACCBCCCCBACACBACBABCACACCCCCACCAABBAACCACBCACBCBACAACBBBCACCBACCBCCBBCACBCBCAACCAAABAAABCABCBBBBCBACCABCBCBAABBACAABAAABAACABCBBCACBABBCCBABBCBABBABABABABBABAACAACBBBCBBCAABABBACAACACAAABAAABABCBCCABACCABCBCCACBBAAABCCABCCBBCBABCCACCCCCABAAABAACBBACCBBCBCCCBAACBCBCBCCBCAACABBBACBACBACCCABAABAABCCBBCAABACBBBBAACCAAACBCACACCBABBCABCACAAABCACBACBAABCBABCCABABACCCCAAABCBBBBCCBBABABAACBCABBCACCBBCCABCCBAAACACCACACCBBCACBACBCBABCABACABCBCACCCBABCACBCABACAABACCBACBCCBACAABAABABCCBABBAABBACABCBCBBABCCBABACAACBBBBCAACBCABCBBBABCBACABBABACBCBBAABCBCCBBBBBCACABCCCCBCBCCBAABBBBABCBBBCCBABACACBCABABAAAABBCBBCAABACBCBACAAAACBBCACABBCCACCCBACCBBBBCBACCCBBCCCACABCBBABBBBCCABCAAAAACBAACCACACBBCCCACBCABBCCACABCCCBABCCBABCBCCACBACAACABACBBCBCCCBCBCBCABCBCBBACCCCAACABACBABBBAAABCABABCBBACACCAABBABBCCABBBCCCCABACACCCBCAACABBBACBCBCCBAABACCACCACBAABCABBCCBCBBABCBCCBACCACBCBABBACBABABCCCABACACBCBACAAAACBCBBCBCBBCCBCBBABBCABBCBAAABBCBCACCCAABBBCBCACCAAACABAAACCCAACCACABBABCBACCABAACACBBBCACBCBBBAACCBBBACBCCAABCCABCCAABBBCCACABCACCCBBCABAAABACACCCBAABCCABACCCACBABBABACCCACCCBABAACBABACCCAABCACABBBBBCCACCB"
3

"BBA.C...BABA..CBA..ACBAB.BBBBBCCB..C.CC..AB.BAAAC..ABA.BACCBBA.ABBABB..ACCCCCBC..CBACBBAA.BBCA.BCAABB.ACB.AB.....BCBAAAA.ACCBBB.CB.A.CACBCCBAC.CACB.ACA.BCBAACBBAC.ACC.CB.A.CBCCBAAC.BAB..CBCBBB..ABBA.CA.BACBC...CABBACA.BB.CCB..BCCCBAACAA.CBAAB.BBA.CABBA..CCAB.CBA.BB..BC..BC.ACB.B.AAAC.BBAACAABBA.AAC..B.BBCCACBACBBAACAACA.C.CBCBCCCAA.A.CA.B.B.A.CACABCBABBCAAAAA.BBA.ACCAACA..AAABBAAAC.BA.BB.CBC.BBA.AACC.CCCCACC.BA.....C..CCCBABBBACBAAC...CA.C.BC.CB.BCB.CBBAACCACCBBBC.AA....CCAA...CAB..AA.CCBCCCBBCCBBBCAAB.ABCBB.AB..BBC..CAAB.CBB..BCA.AACCBB.BBC..CC.A.BAAC.AABAABBCBBACBBAAAC..ACBC..B.BACCCC.CCAB.C.ABB.B.BC..BACC.BBACAABBABA.B.AAABAAC.CABCA.CBCA.AAA.A..AABCAB.BAAAB.AA.A.CACA.CCAAABBACCB.CBAC.ABBBBCAAC.CCC.BAAACCB..ABC.BC.B.B.B.B.ABB.CAABBCCCCAABBB.......AB.BBAA.CBCA.C.BABB.BBA.CC.BCABAAAA.CBC.A.BCC..B.C.AA.CBAACAAA.B...BBA..AACABAAAABAABACACAB.AABBA.BB.CBCAB..AACABA..CAC..ABABC.CCBBABA.AACABABB.CACABBB..B.CBCBBC.BCACBBBAACB..CBAC.CC.CAB.BBBBCBABC.CAB.BC.BCCB.A.B..AC.ABBB.ABBACCABCBACBB.ACBCBA..BABBCA..ABB.BBCBCBB.B..ACBCCA.A.A.BBBBBAA.CBBAABAACACCAAACA.CBACCBAB.BCBBBAB.CBCACBCBCABC.CCBAA.A.ACCBACBB.C.AABBCBCBCCAABC.A.CA.ABABA.CACBABACBBAC.BCCBBC.AACCABABC.CAC.ACB.CBC.ABBAABAACBBCCA.B.BABCCAABCAAA.CCABACBBA.BBCCCCB.BB.CBB.CA.CAA.A.CCB.CAB.C.ABCC..AACBCBBBABBBCBBCBC.BAB.CCCBABBA.CCA.CBBBACBBACBACB.ABB.BBB.AAACB.B.B.C.AAACCACCACABBCAA.B.CCA.ACABA.CC.AACAAACAACA.CCCB.AACA.A.CCCCACCAA.ACC.AAAAA.BBABBBA.C..CACBA.AB..ABA.A.C.B.CBC.C.BCCCB.B.ABACBAC.AABCBC..BACCBBC..BBA.AC.ACACABCBBBBAC.AC.BCACABAA.AB.CCCBA.CBCBBC.B.A.CCAAC.BA.C.CCB.AAA.BB.BCCB.AB.CBBAAC.AAAA.ACBBBAB.BBC.B...BCC.A.CBB..CBBCBBAACBB.CAC.BA.BBC.CA.AA.CAAACA.CBCBBAABCABABAAABACAA.B.CBBCCBBA..CBBBABBCC.AB.B.CCA..B.BCABBBBA.BB.ACB..AACA.BAAC.BC..CA.A.BCACBCA.AAB.CABC..AB.ACBA.BBBCBBC...BBA..C.BAABACCCABCBBAC..A.ACCBCBAACCBB..AA...BA.CBAC.BBBCB.BBBCAABABBACC.C..CCC.BCCBCCC.BCBAAAAA.CABCCCABABA..C.BCCBAAAABAB..ABC.B..BCAA.BBCACCC..ACCAACCBCACACCB.CACC.C.B..CCB...ACBA.CBBCCAB..BA.CABC.BCACAAAC.CA.CABC.ABB..BCACACA.CACBABAC.A.CABCAAA...C.CA.BA.CC.AAA.BBBCA..CAACCBBCBCCCAAC..CBCBB.ACBAB.BC..AAACB..A..ABAACBBC.CABBBB.CC..AABAACCACBACACC.BABBBBA.ABB....CCC.ACC.BA"

Returns: "BBABCABABABABACBABCACBABABBBBBCCBABCACCABABABAAACABABACBACCBBABABBABBABACCCCCBCABCBACBBAACBBCACBCAABBCACBCABABABABCBAAAABACCBBBACBCABCACBCCBACACACBCACACBCBAACBBACBACCACBCABCBCCBAACABABABCBCBBBABABBABCACBACBCABACABBACACBBACCBACBCCCBAACAABCBAABABBABCABBABACCABACBACBBACBCACBCBACBABCAAACABBAACAABBABAACACBABBCCACBACBBAACAACABCACBCBCCCAABABCACBABCABCACABCBABBCAAAAACBBABACCAACABCAAABBAAACABACBBACBCABBABAACCACCCCACCABABABABCABCCCBABBBACBAACABACABCABCACBABCBACBBAACCACCBBBCBAABABACCAABABCABABAABCCBCCCBBCCBBBCAABCABCBBCABACBBCABCAABACBBACBCABAACCBBABBCABCCBACBAACBAABAABBCBBACBBAAACABACBCACBABACCCCACCABACBABBABABCACBACCABBACAABBABACBCAAABAACACABCABCBCABAAABABCAABCABABAAABCAABABCACABCCAAABBACCBACBACBABBBBCAACACCCABAAACCBABABCABCABABABABCABBACAABBCCCCAABBBABABABCABABBAABCBCABCABABBABBABCCABCABAAAABCBCBACBCCACBACBAABCBAACAAACBABABBABCAACABAAAABAABACACABCAABBACBBACBCABABAACABABACACABABABCACCBBABABAACABABBACACABBBACBACBCBBCABCACBBBAACBABCBACACCACABABBBBCBABCACABABCABCCBCACBABACBABBBCABBACCABCBACBBCACBCBABABABBCABCABBABBCBCBBABABACBCCABABACBBBBBAABCBBAABAACACCAAACABCBACCBABABCBBBABACBCACBCBCABCACCBAABABACCBACBBACBAABBCBCBCCAABCBABCABABABABCACBABACBBACABCCBBCBAACCABABCACACBACBACBCBABBAABAACBBCCACBABABCCAABCAAABCCABACBBACBBCCCCBABBACBBACABCAABABCCBACABACBABCCABAACBCBBBABBBCBBCBCABABACCCBABBABCCABCBBBACBBACBACBCABBABBBCAAACBABABACBAAACCACCACABBCAACBACCABACABABCCBAACAAACAACABCCCBCAACABABCCCCACCAABACCBAAAAACBBABBBABCABCACBABABABABABABCABACBCACABCCCBABCABACBACBAABCBCACBACCBBCACBBABACBACACABCBBBBACBACABCACABAABABACCCBABCBCBBCABCABCCAACABABCACCBCAAACBBABCCBCABACBBAACBAAAABACBBBABABBCABABABCCBABCBBABCBBCBBAACBBACACABACBBCACABAABCAAACABCBCBBAABCABABAAABACAACBACBBCCBBABACBBBABBCCBABABACCABABABCABBBBACBBCACBABAACACBAACABCABCABACBCACBCABAABACABCABABCACBACBBBCBBCABABBABACABAABACCCABCBBACABABACCBCBAACCBBABAABACBABCBACABBBCBABBBCAABABBACCACABCCCABCCBCCCABCBAAAAABCABCCCABABABACABCCBAAAABABABABCABACBCAACBBCACCCABACCAACCBCACACCBACACCACABABCCBABCACBABCBBCCABACBABCABCABCACAAACACABCABCBABBACBCACACABCACBABACBABCABCAAABABCACACBABCCBAAACBBBCABACAACCBBCBCCCAACABCBCBBCACBABABCABAAACBABABCABAACBBCACABBBBACCABAABAACCACBACACCABABBBBABABBABABCCCBACCABA"
4

".....DD.BA....C.CB.D.BC..B.CDA....CD..BACC.C..A.....BB.BC.C....A..DB....A...CBADAA..BABA...C.D...BC..C....DC.....BC....D.A..A.A.AC.C...C...A......C.A.........D..CD.D.C..B..D.ABBD....ACD.B.A.CB.D...A..B..A...BAC......A...C...B.C...C.CDCBC..D.AD.D.....B...CB........C..D..C.....ACBA..BCD..A..CB.....B.......A..DCB..DD.....D.......BC.....AC..DB..CA....B..B..D...C.....ADB.BC.C.A.BB.DB..CA..A........DA.....AA.BDBD...A.A...ACB.CA.ACAB...A...C..B.DDCA..D.DBAD..BC...A...C...A.B.D.D..CB......B.....AAD.D...BDD....CC.BDDA..DBDAB.CBADC....C.C.B..C.....C....A....B..D.D...A.CC.DCC..ABCA.DBCA...D..D...DAADBC.BACC..........B..D........CA.B.DA.DC....A.BD.CB..C.D.BA.DCA.D.A...DC...C.C......D..BDC.C.BD..CCD..DB..D.BA.D.B.....A.A..A...B...CA.ACDB.A..BB..D........D.....A..CD.BBBABA..C.B.B..D.D....C....BC.B.........AD....D.BC.B.AD.CA......BAB........D....D...D.B.AB..B.AC.B..CA...DA....B.....DCBBD.DC..D..D..CC..D......DBC.....DC..B.A..D.C..A.D.......A.DA.....DDDCA.D.....BC.BBBB.CDD....D.......B.C.D..CCB....B....CCB...D.B.D....D.B.D...BB....DA.D.B..C..B..C..B.C..DBAB...D.....B..D..D.C.B......A.......DD.C.DC..DB...DB..A..DBBBA.ABDB.BDD.....C..ACBB..AA.A..AA..CAC.DD.DBD..D..D..AA....B.DDCC..DD.CDDDBC.B..ACA...A...D...C......CD.....A..ACCD...AA.....DBAB.CC...CB....B.D...C..BD.A.B..C...C....B.D.B.BDC..B..C...B.D.A...AAAA..A.A..D.....AAAAC.D......CC...C.C.C.DBD.B.B.....DC.....ACDCCBD...BD.A..AA..B..BCDA..DCA..A.B.BD...C..BD.DCC.BA...C...D.B...CDCA..BB....A.....AD.BCBA.AD....CB.D...........B..DABD..BAC..B..DC...A...DA..ABC.C.C.C.CACAC.AC...CD...A..C........A....BB..D.DAB...C.AD.C....BA..ABBD.C.C.C..D...BC.AA..ACCD.BDC.C.AB...BA.B.AC...DB.......D...D..A.ACA.B.BD.AA.B.CBC..CDD........CC..CD.B.D..D...D....DBB..BD..B....AD....D.A..BC..DAD..D.D...DCBCB.....BBC..DCC..BDDB..AAB.CA...BA.........D.D.AC.A.AC......ADBD.D..BA....C.D..D.D...DC..AC.A..AC...AC.BD..B......ACB....D..BDDD.A...A...C..AB..DA.A........D......CA.C..A..C...C...A...D.D......C.B.DB.D.BA........D.....A..A..CB..C.CD..D..B.DDAC.D....B.A.....B....BCCB...BCCDA.BA..D..B.DABC...BA..BCBD.D.......C.BB...C...D....CC..A.AC.D...A..CD.....CD....BAA....D...........CCDD.AA..A..DB.C.....B.BC.AD.A...D.D..ADB.C..ADC.D.......C.."

Returns: "ABABADDABABABACACBADABCACBACDABABACDACBACCACABABABACBBABCACABABABADBABABABABCBADAABABABABABCADABABCABCABABDCABABABCABABDBABCABABACACABACABCABABABACBABABABABABDABCDADACACBABDBABBDABABACDABCABCBADABCABABABABACBACABABABABABCABABACABACACDCBCABDBADADABABABABACBABABABABCABDABCABABCACBABABCDABABACBABABABABABABCABADCBABDDABABADABABABABCABABCACABDBABCABABABACBABDABACABABCADBABCACBACBBADBABCABCABABABABADABABABAACBDBDABCABABABACBACABACABABCABABCACBADDCABADADBADACBCABCABABCABCACBADADABCBABABACBABABCAADADABABDDABABCCABDDABADBDABACBADCABABCACABABCABABACABABABABABABDADABCABCCADCCABABCABDBCABABDABDABADAADBCABACCABABABABACBABDABABABABCACBADABDCABABACBDACBABCADABABDCABDBABABDCABACACABABABDACBDCACABDABCCDABDBABDABABDABABABCABABCABACBABACABACDBCABABBABDABABABABDABABCABACDABBBABABACABABABDADABABCABACBCABABABABABCADABABDABCABCADACABABABABABABABABABDABABDABADABCABACBCACABABCABABDABABABABABADCBBDADCABDABDABCCABDABABABDBCABABADCACBCABADACABABDABABABCABDABABABDDDCABDABABABCABBBBACDDABABDABABABABACADABCCBABACBABABCCBABADABADABABDABADABABBABABDABDABABCACBABCACBACABDBABABADABABABABDABDACABABABABABABABABDDACADCABDBABADBABABADBBBABABDBABDDABABACABACBBABAABABCAABACACADDADBDABDABDABAABABABADDCCABDDACDDDBCABABACABABABABDABACABABABCDABABCABCACCDABCAABABABDBABACCABACBABACBADABACACBDBACBABCABACABACBADABABDCACBABCABABADBABABAAAABCABABADABABCAAAACADABABABCCABACACACADBDABABABABADCABABCACDCCBDABABDBABCAABABACBCDABADCABCACBABDABACACBDADCCABABABCABADABABACDCABABBABABABABABADABCBABADABABCBADABABABABABABABDABDACBACACBABDCABCABABDABCABCACACACACACACBACABACDABCABACABABABABABABABBABDADABABACBADACABACBABCABBDACACACABDABABCBAABCACCDABDCACBABABABACBCACABADBABABABADABADABABACACBABDBAACBACBCABCDDABABABABCCABCDABADABDABADABABDBBACBDACBABABADABABDBABABCABDADABDADABADCBCBABABABBCABDCCACBDDBABAABACABACBABABABABABDADBACBABACABABABADBDADACBABABACADABDADABADCABACBABCACABCACABDACBABABABACBABABDACBDDDBABABABABCABABABDABABABABABADABABABCABCABABACABACABCABABDADABABABCABADBADABABABABABADABABCABCABACBABCACDABDACBADDACADABACBCABABACBABACBCCBABABCCDACBABADACBADABCABABABABCBDADABABABACABBABACABADABABCCABABACADABCABACDABABACDABACBAABABADABABABABABACCDDBAABCABADBACABABABABCBADBABABDADABADBACABADCADABABABACAB"
3

"BCACCCAC..A.CB..CC.BA...CCCCCCCA.A..CCC.ACAA.ABBBAA.A.CABA..B..BB....BBA.ABB...BABA.AC.AB.AAACBA.CB.B..BBABCBAAACBAABAA.AC.CCC.AC.ACBAB..CBBBCCAAC.BBCBBA.CAAABB.ABCAAB.CAAACBA.CCABCAACBB.A....BABA..AC.CCA.A.AAA..ACC..ACB.ACCABABB..ABCC.A.CCBCCBAABB.ABAABBBBBAAAACC.A..BBC..CCCCACAABA..CCB.BCC.BB.BB.B.A.B.CBB.B.A.B.AACBA..CBBB.A.AABB..ACB.C.BCCBCCB.BAC.AC.BACCB..C..B.AC.CBCCA..A.A.A.BAAAAABBCC.BB...CBA.BCCACCAAACBC..AAAAC.AAA..CA.CCCBA...ABCCA.BBA.CBBBCCAB.B...CA..BBCCBABBCBBA.B.A.CBBCABCC.CAB..ACABACAC.CB.AAACBABB.CB.B...A.CCBABAC.A.CBCCAAAACC.BBBB.CCBA..C...CB..CC.A.ABAABCAACC..AA.AA.C.C..CC...BC.A.AAACC.C.A....ABAC..BBBA.BAA..CCBCAA..BCA.A..A.ABBAAAC..A.C.AA..AA.B..BBABCBC..CBCCBAAB.BBCB.BABAA..CCB.BBB..CBAC...BCACAACACAABBB..CCC.ACA..BCCBBA.ACCCC..BACA.C...CCBBBBB..ACACAACBA.B.BA.BAACCBAC..CA.C..CABBCAA.CBC.CC.CC..B...BACA..BBBACB.BC.CACBC..BC.B.A.ABBBCBACBBA.A.CC..A.A..CBCBCACA..CB..BA.BA.C.CBB.A....BA.CAB.AC.CAABCCB.CB.A.CA.CAC.B.ABC..B.B.AB.ACA.AA...CABBBCB.CABCC..A.ACAAB.ABCACBBBB.BCCB..BCAA.ACCAA.CABCB.CC.AA.ABC.AACAACAC.BB.BBBC..C.AC.B...BCCBBABAC..AC.AAB.CAAC....BACCABB.AB.AABAAACABCBAB.CCBCBCAA...ACC.BBBBA.BC.A.BCBABAB.A.BCA.CBAC.CACAC.A.B.C.CABC.CCA.AA.AAB..B..ABACCACCC.BB.CCA.CAB.BBAB.BBC.A.CACCBBCC.B.BBA.A..C.BC.ABCC.C.AC...A.A..BCCA...A.B...CA.B.AA.BC.B...BAACCBAC.ABCACA.ACC.ACAC.BAC.CA.ABBBC..CC.B.CACCBA...CA..CB.BCC..AACBBBC.CAAABBC...CBC.BCCC.A.C.BBCBC.B.A.AC.BCABBCCBC.BACA...BC.A.AABBCAA..BA.A.BCB.BBBC..B...C.BC.AA.ABB.A.ABBBAAABAA..A.BB..CCABBCBCABABC..BBAA..ACBCAAC.CCB..ACC.CABA.CA.A.CBA.CABCCCA..BABC.....B.C.BC..C.ABBAA.CCCBABAACABCAACCA.AA..C.C.BABBAAAAC.BABA.A.ABB...CACBAAB.AAA.A.BB.A.BABC..C..CA..AC...CAC.BAC....C.B.CBACCA...ABBCBB.CA.BBABA.B.A.CBBCBCC.A.CCAABBBBCA...B.ABCCAAC.CC.CBABAA.BB....B.B.A.C....ABBBBCB.B.BBCBBAB.BCBBB.AAAAA.CAABAAAC..A.CCCA.BC.A.BB.....ACABBB...C..BB..BA.CB.B.CCBA.CA.ABCCBB.ACBAABCCCBCCAAAB..B.CB.C..C.C.B.CCB.C...BC..A.BAC.A.ABAAB.ACAB.B.C.BCA.AC.A.C.A.B.CC.B....CB.BB.A.BC...B..BAA.C.CABC.AAABA..ABBBCABCB..CCAAB.BAC.B.B..A.A.ABAACCCBCABABA.C.BBB.CCB.BA.ABAC.CA.C.C.CAAA.A.BCCCA.AC.ACB..A.B..A...BCBCCB...BA.CBBC.BACB.AC.BCABAB.C.BCCA.BCA.B.CB.ABB.BAACCBBBCCBA..BAA.A."

Returns: "BCACCCACABABCBABCCABABABCCCCCCCABABACCCBACAABABBBAABABCABABABACBBABACBBABABBABABABABACBABCAAACBABCBABACBBABCBAAACBAABAABACACCCBACBACBABABCBBBCCAACABBCBBABCAAABBCABCAABACAAACBABCCABCAACBBCABABABABABCACACCABABAAABCACCABACBCACCABABBABABCCBABCCBCCBAABBCABAABBBBBAAAACCBABABBCABCCCCACAABABACCBABCCABBABBABCACBACBBABCACBCAACBABACBBBCABAABBABACBACABCCBCCBABACBACABACCBABCACBCACACBCCABCABABACBAAAAABBCCABBABACBACBCCACCAAACBCABAAAACBAAABACABCCCBABABABCCACBBABCBBBCCABABABACABABBCCBABBCBBACBCABCBBCABCCACABABACABACACACBCAAACBABBACBABABCABCCBABACBABCBCCAAAACCABBBBACCBABACABACBABCCBABABAABCAACCABAABAABCACABCCABABCBABAAACCACBABABCABACACBBBACBAABACCBCAABABCABABCABABBAAACABABCBAABCAACBACBBABCBCABCBCCBAABABBCBABABAABACCBABBBABCBACABABCACAACACAABBBABCCCBACABABCCBBABACCCCACBACABCABACCBBBBBABACACAACBACBABACBAACCBACABCABCABCABBCAABCBCACCACCACBABABACABABBBACBABCACACBCACBCABCABABBBCBACBBABABCCABABABACBCBCACABACBACBACBABCACBBCABABABABCABCACACAABCCBACBCABCABCACABCABCACBABCABCACABAABABCABBBCBACABCCABABACAABCABCACBBBBABCCBACBCAABACCAABCABCBACCBAABABCBAACAACACABBABBBCABCBACABABABCCBBABACABACBAABACAACABACBACCABBCABCAABAAACABCBABACCBCBCAABABACCABBBBACBCBACBCBABABCACBCABCBACACACACBACBACACABCACCABAABAABACBABABACCACCCABBACCABCABABBABABBCBABCACCBBCCABABBABABACABCBABCCACBACABCABABABCCABABACBABACACBCAACBCABABABAACCBACBABCACABACCBACACABACACABABBBCABCCABACACCBABABCABACBABCCABAACBBBCACAAABBCABACBCABCCCBABCABBCBCABCABACABCABBCCBCABACABACBCBABAABBCAABABABACBCBABBBCACBABACABCBAABABBCABABBBAAABAABCACBBABCCABBCBCABABCACBBAABCACBCAACACCBABACCACABABCABABCBABCABCCCABABABCABABABACABCABCBABBAABCCCBABAACABCAACCABAABACACABABBAAAACABABABABABBABACACBAABCAAABACBBCACBABCABCABCABCACABACACABACABABCABACBACCABABABBCBBACACBBABACBCABCBBCBCCBABCCAABBBBCABACBCABCCAACACCACBABAACBBABACBABCABCABABABBBBCBABABBCBBABABCBBBCAAAAABCAABAAACABABCCCACBCBACBBABABCACABBBABACACBBACBABCBABACCBABCABABCCBBCACBAABCCCBCCAAABACBACBACABCACABACCBACABABCABACBACBABABAABCACABABACABCABACBABCBACBACCABABABCBABBCACBCABABACBAABCACABCBAAABABCABBBCABCBABCCAABABACABABABABABABAACCCBCABABABCABBBACCBABABABACACABCACACAAABACBCCCABACBACBABACBABABACBCBCCBABABABCBBCABACBCACABCABABACABCCACBCACBACBCABBABAACCBBBCCBABABAABAB"
4

"..........DA........................D.......A.....................................B......C.......................................AA......B...C.......................A......D..B.....................................................C............A...D.....B.............A......D..........C...............C.....................................................................................................B............C..........................D..............B....A.....D......................DC...........................................................C......................C.....A....................................B..............................C................A.....B......................................................................................................C...........................B......................................C.....................................................................................................C.............................D......C..........A........A..A.....................A..............D....................................................................................A..........B..............................................C............A.....................D........................................D................B..........C.....................................C.......................C......B...B................................................A........B.................................A...................................................B........A.....A.................................................A......................................D.................D............................D...................B..............................................B.......................................................................................D..A.........A...............B.................................A..........A..........................CA..D................A..................................................................A................C.C....B............................................B......................................BB....B..............D.....................................A..............C......................................B..A..C.............................................................B.......D..D........A.............................B...................................................................................................A...............................A............."

Returns: "BABABABABADABABABABABABABABABABABABADABABABCABABABABABABABABABABABABABABABABABABACBABABABCABABABABABABABABABABABABABABABABABABABCAABABABABABACABABABABABABABABABABABCABABABADACBABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABDABABABABABABABABABCABABABADABABABABABCABABABABABABABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABDABABABABABABACBABABABABABDABABABABABABABABABABABDCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABCABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABADABABABCABABABABABABABABABCABCABABABABABABABABABABABABABABABABABABADABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABDABABABABABABABABABABABABABABABABABABABABDABABABABABABABACBABABABABABCABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABACABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABADABABABABABABABABADABABABABABABABABABABABABABABDABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABADABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABCABABABABABCABABABABABABABABABABABABABACABADABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABACACABACBABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABACBBABACBABABABABABABABDABABABABABABABABABABABABABABABABABABCABABABABABABABACABABABABABABABABABABABABABABABABABABACBABABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABADABDABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABAB"
3

"ABCB.CABCAAB..BCBACBC.BCAABABA.BBA..ACAAABCBACBBBACAA.BBCCBB.B.BAB.ACB..AABAACB.C..ABCCBABACAABCBBBA.AC..C.A...BCB.A..A.CACBBCABCBCACCAAC.CA.BBACB.AABB.ABC..CBCBACBBCA.CA.BACC.A.BAAABCCBABABBBC.A.CBA.B.CBA.B.BC.CABBAAC.BB...A.BAB.AACACACCCBCBAACBBAB.B.BCCBBAACABBBACBCABAACAC..AA.A.CABCCBBCCCBBAAAAACCBAACB.ABCCBCBB.CA.ACCCCABCB.AA.BC.CAA.AABCABA.A.B.CACACCCBCACA.AAAACAB.CABC.C.CA.BABABBBC...BAAACABBC.AAA.CBBCC..BBAB.ACC.BBABABBACCBB.A.BCB.AC.BCBB.CACCABB.ACBACCC.C.CCBABCA.ACB.CC.CC.B.BACCCBA.CCCCBBBCBCCCCCA..BBAAC..ABBBCAC.CAC.BCBAAAAA.CBA.C.ABBA.AC.BC.A..AABCABC.ACB.CBB.C.B.ABBCCCCABAAAA.BCBBAAABBA...CBACAB.BCBAABBBAACCACCCBABBBBCABBC.ABCBCBAB..CACBCAAABAAAC.BBAB.BAA.A.C.CACAAA.AAC.ABCC..CCA.CAABACCCB.B..CBBCBCB.BACBCBBAA.BBC.CACA.AC.CBAAACABBA.ACCBBBBACAABCBCBA.CB.AB..CCBA.CAAACCAAAC.C..CBBAB.C.AC.CB.ABA.ACC.C.ACC.C.BCBAAACCA.B..AABCB.CCAABAC.C.BBCCABB.AABBCCAB.CAC.CBCACCC.CCCBBBA.A.CCA.BCBAB.CC..ACCCB.BAAACB.BAABACAABA.ABCCBCACBCBA.CB..A....CBB..BBAAABB..CBCBBB.BACC.A.B.BACBA.C.BBACC..AABAC.CBACBCC...B.ACBC..BBC.AA..A.CAC.AABBBAB.C.AC..BBBAB.A.AB.AAABAACCCBC.CACC.B.BBCAC..BC.CCB..A..ABAC.AACC.BC.BB.BCA.CC.BBACBA.BAB.AABBBBBBBCBBCACA.CABBACBABBCABBBCCBCCCAACC.BBAB.ACCCBAAB.AABBA..CC.CACAACAC..BBABABABCC..A.BA.A..ABCABABCCACBAB.ABBC.A.B.ACA.BABCBBA.CABA.C.CBA.CBBBA..CA.CACCC.BC.ACABCACCB.BABAC.ABACBCCBBCCCBBCABBBCBB..CACABB.B..BBBBACABCBC.BCABBACCACBBBC.A.BBBABABCBCC.CCBC.BC.B.B.AC.CA.B.CCAABA.BA.C.ACABA..BBB.BAAA..ACBCCCCB.AB.B.ACCBCA.ABC.ABCABCCB.BCBAB..CBBAACBC.BAC.CACB.BCABCA...BA.BBBAA.BAC.CBA.BA..CAA.C.BB.C.CBAA.BBCABACCCABBBC..C.CCBBB.C.CCBABBCBABCCBCCBA.A.CACAA.AAAA.B.BCCBCBCCBBABCCCCABC.A..CABB.CABBCABCCA.BBBCAA.AB.AA.CBC.A.....ACA.B.CAB.BCBCCBCCBAC.BAA.BB.BAC.ABACBAA..A.ABCA.AACBC..BCCBACA.C.BACCCAC.CBC.ACB.BAAAAAA.BCAABB.CBCBCCB.CA.BB..CAACBABCB.BAAB.BBACACBB.BB.BB...C.CBBCBB.B.BCABBCAACB..ABCA.BB.A..C.CABABA.BBA.AACBC.CC..BBAC.BBBA..B..BAAB..ABCBBA.CCBAC.BBBCBAAACBBA.BAACAC.A.BA.A.CACACABBBCABCACAAA.A.A.CAC.AB.CCBCC.CCBC.CAC.CAC.CC..A.ABCC.CABBABACABBB..AACCCBBCABB..BAACCABCAABB.BACCAA..BAAC.BABACBABACAB.BCCACBB.A..BB.AABBAB.BCC.C.C.ABAABCB.AAAAA.AB.AB..B.ACBB.CCB.AA.ABA..CBBCACA.ACC.CBACCCBBCABCAABC.BCCCBB..CBABCBBBA..A.BABCA..BAAC.BCC.BCAACCAB.ABACCBCBC.ACAAA.CA..CAA.A.C..AABABC.A.B.C.BB.CB.CBCAAB.BB"

Returns: "ABCBACABCAABACBCBACBCABCAABABACBBABCACAAABCBACBBBACAACBBCCBBABABABCACBABAABAACBACABABCCBABACAABCBBBABACABCBABACBCBCABCABCACBBCABCBCACCAACACACBBACBCAABBCABCABCBCBACBBCABCACBACCBACBAAABCCBABABBBCBABCBACBACBACBABCACABBAACABBABCACBABCAACACACCCBCBAACBBABABABCCBBAACABBBACBCABAACACABAABABCABCCBBCCCBBAAAAACCBAACBCABCCBCBBACABACCCCABCBCAACBCACAABAABCABABACBACACACCCBCACABAAAACABACABCACACACBABABBBCABABAAACABBCBAAABCBBCCACBBABCACCABBABABBACCBBCACBCBCACABCBBACACCABBCACBACCCACACCBABCABACBACCACCABABACCCBABCCCCBBBCBCCCCCABABBAACABABBBCACACACABCBAAAAABCBABCBABBABACABCBABCAABCABCBACBACBBACABCABBCCCCABAAAACBCBBAAABBABABCBACABABCBAABBBAACCACCCBABBBBCABBCBABCBCBABABCACBCAAABAAACABBABABAABABCACACAAABAACBABCCABCCABCAABACCCBABABCBBCBCBABACBCBBAACBBCACACABACACBAAACABBABACCBBBBACAABCBCBABCBCABABCCBABCAAACCAAACACABCBBABACBACACBCABABACCACBACCACABCBAAACCACBABAABCBACCAABACACABBCCABBCAABBCCABACACACBCACCCACCCBBBABABCCACBCBABACCABACCCBABAAACBABAABACAABABABCCBCACBCBABCBABABABACBBACBBAAABBABCBCBBBABACCBACBABACBABCABBACCABAABACACBACBCCABABCACBCACBBCBAABCABCACBAABBBABACBACACBBBABCABABCAAABAACCCBCACACCABABBCACACBCACCBABABCABACBAACCABCABBABCABCCABBACBACBABCAABBBBBBBCBBCACABCABBACBABBCABBBCCBCCCAACCABBABCACCCBAABCAABBABACCACACAACACACBBABABABCCABACBABABCABCABABCCACBABCABBCBACBCACACBABCBBABCABABCACBABCBBBABACABCACCCABCBACABCACCBABABACBABACBCCBBCCCBBCABBBCBBABCACABBABACBBBBACABCBCABCABBACCACBBBCBACBBBABABCBCCACCBCABCABABCACACACBACCAABACBABCBACABABABBBABAAABCACBCCCCBCABABCACCBCABABCBABCABCCBABCBABABCBBAACBCABACACACBABCABCABACBACBBBAACBACACBACBABACAABCABBACACBAACBBCABACCCABBBCABCACCBBBACACCBABBCBABCCBCCBABABCACAABAAAACBABCCBCBCCBBABCCCCABCBABACABBACABBCABCCACBBBCAABABCAABCBCBABABABACACBACABABCBCCBCCBACABAACBBABACBABACBAABCABABCABAACBCACBCCBACABCABACCCACACBCBACBABAAAAAACBCAABBACBCBCCBACACBBABCAACBABCBABAABABBACACBBABBABBABACACBBCBBABABCABBCAACBABABCACBBCABACACABABACBBABAACBCACCACBBACABBBABABACBAABABABCBBABCCBACABBBCBAAACBBACBAACACBACBABABCACACABBBCABCACAAABABABCACBABACCBCCACCBCACACACACACCABABABCCACABBABACABBBABAACCCBBCABBACBAACCABCAABBABACCAABABAACABABACBABACABABCCACBBCABABBCAABBABABCCACACBABAABCBCAAAAABABCABACBCACBBACCBCAABABABACBBCACABACCACBACCCBBCABCAABCABCCCBBABCBABCBBBABCACBABCABABAACABCCABCAACCABCABACCBCBCBACAAABCABACAABABCABAABABCBACBACABBACBACBCAABABB"
3

".......B.........AC....A..........B...B..................A.A......A..B.............CC..................C.....B..C.A...................C.........A.............B...........B......AC.......A.C.........A...........C..B....C..A.......C.CC.......C..A.............C......A.........C...C....B.B..........A.....B..........C....B..............A...A..C.............C..........A.A.C.......A.......C.........A.A.......A....B..........B...C............C.B....C......A..A.......ACAC.C......A..................AA.....C.......B.......B........A..C........C.B....B.........C.......A.C....C............C...B..CC.B.............C...C..........A.........C.C....C..................B....C..B......CA..B.BB............C..........BCC.................A....B.....A....C.....B.C..A..C...........B...........A................C...A.........C..A.A....C..........B..........A.....B.....A..B..A...C....C.........B..C.....AB....CC.............B.B.........B......B..........AB...........C.A.C............C..B.........AAC.A........CB.......B.........C...............................C.........C...C...................C.......C..C....B..B.........AC........A...C............A..A..BB........C......B...B..C.B.......B..A.........................A.........A...B..A..C.........B.B.C..A..A.........................C.B....................B.BA..B..............B.B...A..C.........C......B..C..A..B.........C.....C.......B....C......B........C.....C...B.BB.............C..................A...................C.B..B....C.....A......B....C...........C..B..............................C............C...........A..BA.......A...A.............C.....A.....................C.....A...AA.....C.......A........C..................................BB...B.......C..............................C..............A.............A....C.C.....ABB.B........C....B.B....BC.BC.....CC..................C.....A.....C....BA.........C...................B..C..............C......ACA..........A...B.........A.B.....A.....CA.A........C.......BC.............B...............C....A..A......................C.......A....C......C.............A.B...A......B........B.B........A.......................B.......................A.B...B..............A......C.BACB.................A..........A..A......B.C.CB........B...A..B..............................A............A..........A.................AC..CAA.....................B............."

Returns: "ABABABABABABABABCACABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABACCABABABABABABABABABCABABABABCBABABABABABABABABABABCABABABABCABABABABABABACBABABABABABABABABABACABABABCABCABABABABCABABABABABABCACBABABCABABABABABCACCABABABACABABABABABABABABCABABABABABABABABCABACABACBABABABABABABABABACBABABABABABCABACBABABABABABABABABABABACABABABABABABACABABABABABABABCABABABCABABABABCABABABABCABABABABABABABABABABABABACBABACABABABABABABCABABABCABABABABCABABABABACACACABABABABABABABABABABABABCAABABABCABABABABABABABABABABABABABACABABABABCABABACBABABABABACABABABCABCABABCABABABABABABCABABABCCABABABABABABABACABACABABABABABABABABABABCACABABCABABABABABABABABACBABABCACBABABABCABABABBABABABABABABCABABABABACBCCABABABABABABABABCABABABABABCABABACABABABACABABACABABABABABABABABABABABCABABABABABABABABACABCABABABABABCABABABABACABABABABACBABABABABABABABACBABABCABABABABABCABABCABABABABABABCABABCABABABCCABABABABABABABABABABABABABABABACBABABABABABABABABABABABACBABCABABABABABABCACBABABABABCAACBABABABABACBABABABABABABABABACABABABABABABABABABABABABABABABACABABABABACABACABABABABABABABABABACABABABACABCABACBACBABABABABCACABABABABABABCABABABABABABABCABABBABABABABCABABACBABABABCABABABABABABABABABABABABABABABABABABABABABABABABABACBABABACABABABABABABACABABCABABABABABABABABABABABABABCABABABABABABABABABABACBABABABABABABABABABACBABABCABACABABABABACABABACBABCABABABABABABABACABABACABABABABABABCABABACBABABABABCABABACABABABBABABABABABABACABABABABABABABABABABABABABABABABABABABCABACBABABCABABCABABABABABABCABABABABABACACBABABABABABABABABABABABABABABABCABABABABABABCABABABABABCABABABABABABABABABABABABABABABCABABCABABABABABABABABABABABCABABCABABAABABABCABABABCABABABABACABABABABABABABABABABABABABABABABACBBABABABABABACABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABACACABABCABBABABABABABCABACBABABACBCABCABABACCABABABABABABABABABCABABCABABABCABACBABABABABABCABABABABABABABABABABABCABABABABABABABCABABABACABABABABABCABACBABABABABCACBABABCABABABCABABABABABACABABABABCABABABABABABABABABABABABABABACABABABCABABABABABABABABABABABACABABABCABABACABABABCABABABABABABCACBABCABABABABABABABACBABABABABABABABABABABABABABABABABACBABABABABABABABABABABABCACBABABABABABABABABABABABABACABACBABABABABABABABABCABABABABABCABCABABABABACACBABABABACBABCABABABABABABABABABABABABABABABABABABABABABABABCABABABABABCABABABABABABABABABACABCAABABABABABABABABABABACBABABABABABABA"
4

"..A.C....DACCDB.B...B..BAAAD.AC.A.AD..AC...DDCA...A.DC..D..ADCDCCB....D.B.AA.........CD.B.AB.AD...C........D..B.C.....BD.C.CDD...B.C.B........A.C.BA..A.DDBA...A.....CD.AD...AAA.B.......DC.A.B.A...B.D..B.....DCADC....C.BDD.A..AC..AD...A..C....C.CA..DCC.DBA..C.D..BADCCC.....AD.....D.D..B.A.AC.BCD.D...C..D..A....D.BD.ABB..BD..DC..CC.ADDC...ABA.DAC.B.A.BB.D..B...C...BDA.AA...A....C..AA..CB....B.C.B..C...A....DA..ACDCCD...B.C..CBAC..C...CAD....B..D..DAC.DD..C....AABB.....C.ABC.BD.C..DC...ADA....D.A..BBB......BBAABB.CDA.D...A..DCD.CB.B.DDACC.D..AAB.....C.C.BAB.....C...D.C.DABB.B...B.CBBB.AA..B.D.....C.D....A..CCDD......B.B.B.A..B.BA.CBC....A.ACDC..CBC....D......BC.B..C.B..CD.A..ABDDC.DAD......A.CC..A..BD..D....BB..D...C..B.B..B.....C.....C..A.BC..AC..BCD.B..C.C..B......D....B.C...C..BD.AA.BA...D.......D.DD.C.....AB.BDBBA.CD.B.D.AC..A...A..C......A.D.DB...DBADDA.AB.....DB.A.....D..CAAC..B.A.C.C..B.A...DB.DA....C..BDDA........C..CC.B.B...CAADD.BCD..ABDD.......A..A..AC.BB.....D...D...BC.ADB.CCCCDAD.C..CA...DAC.AB.BA..A..CDBCBB.....A..A.DABC...AD...B.C..B.A.....D.......C.D.CC.CD..C.CAA.AC.D..A.DBC......B..DAAB.C..A.CD..CAADD..DAB.C..C..A..AD......DCBDBCD.C.....A.B.A...C.C.AD.....A.DBA.A.CD.BDD..CCCC...D....C...A.CA.A..CD....B.D.CBB...DC..C.A...B.C.A.D..DB.A.B......D...BA.AABDA.CBDCCA.D.C.....AA..AC.BD..DACB.D.A.DCBCCA..DB.C..D.D....DDC.A..D.A.A.C......CAD.A...ABAAAD..BA..AC..C..D..CB.....A.C..........BB.D...A...AADB.B..AA...BBD..DAA....B.B..C..C..A.....A....BDA..D..........C...D.B..DDDDC.B....C.A..A.C..AB....B...D.A.BC......D.A...B..B.A.AAB.......B.BA....BA.AB......D.A........BDCCC.D.AADA.DC.B.BA....A...AD...........AD...A.DABD...ABD...BC.....BA...D.BD....CA.C.BD.BB.DBA..C..D.C..D.AC..CC.AC.A.AAB....D..C.CDCB..CCC.BBD......CAB..D.AABC.C.A...B..BB.A.DB..B..DD.DDADBC.C.D.....B...CCC..D.CDB..CA...DD.ADCC..C.......ACA.B.B..AB.B...A.A....B.ACA....B..DCD...BBA.C......CD..DC.ADDBBB..DCC.....A.DAADCD..BC...D....A...CD.BBAA.CC.C.AB...AAC.C.DBC.BA...B.ACDD..CDCDBACCC.AADAD.C.....A...AD...A..D.A...D..A.DD....DBD..B..C..DD..A...C..CA....B..B..C..C.DA....BB.AC.D...AC..B..BD.BCDCB.CDBC.C.D....B..D.C..C..A......B..C...ADB.C.D.A...C......A......A.C.......C....DB......C.C..AC...DD..ACC.A.B...BC......A.B.B.ADC...A......ABBB....D.D.AADAD.D......DB.DBB.CADBC..B..D...ADBA..B.DA...DDDC..A"

Returns: "ABABCABABDACCDBABABABACBAAADBACBABADABACABADDCABABABDCABDABADCDCCBABABDABCAABABABABABCDABCABCADABACABABABABDACBACABABABDACACDDABABACABABABABABABCABABCABDDBABABABABABCDBADABCAAACBABABABADCBACBCABACBADACBABABADCADCABABCABDDBABCACABADABCABACABABCACABADCCADBABACADACBADCCCABABCADABABADADACBCABACABCDADABACABDABABABADABDBABBACBDABDCABCCBADDCABCABABDACABCACBBADACBABACABABDABAABABABABACABAABACBABACBACABABCABCABABADABCACDCCDABABACABCBACABCABACADABACBABDABDACADDABCABABAABBABABACBABCABDACABDCABCADABABADBABABBBABABACBBAABBACDABDABCABADCDACBABADDACCADABAABABABACACABABABABACABADACADABBABABABACBBBCAABABADABABACADABABABACCDDABABACBABABCABABABABCBCABABABACDCABCBCABABDABABACBCABABCABABCDBABCABDDCADADABABABABCCABABABDABDABACBBABDABACACBABACBABABACABABACABACBCABACACBCDABABCACACBABABABDABACBACABACACBDBAACBABABDABABABADADDACABABCABABDBBABCDABADBACABABABABACABABABABDADBABADBADDABABABABADBCABABABDABCAACACBCABCACACBCABABDBADABABACACBDDABABABABACABCCABABABACAADDABCDABABDDABABABCABCABCACABBABABADABADABABCBADBACCCCDADACABCABABDACBABABABCABACDBCBBABABCABCABDABCABCADABABACACBCABABABDABABABACADACCACDABCACAABACADABABDBCABABACBABDAABACABABCDABCAADDABDABACABCABABCADABABABDCBDBCDACABABCACBCABABCACBADABABCABDBABABCDABDDABCCCCABADABABCABCABCABABACDABACBADACBBABADCABCBABACBACBABDABDBCACBABABABDABABABAABDABCBDCCABDACABABCAABCACABDABDACBADBABDCBCCABADBACABDADABABDDCBABADBABABCABABABCADBABABABAAADACBABCACABCABDABCBABABCABCABABABABACBBADABCABABAADBABABAABACBBDABDAABABABABABCABCABABABABABABABDABADABABABABABCABADABABDDDDCABABABCBABCABCABABABACBABADBACBCABABABDBABACBACBCABAABABABABABABABABABABABABABABDBABABABABABDCCCADBAADABDCABABABABCABABADABABABABABCADABCABDABDABCABDABABCABABABABABDABDABABCABCABDABBADBABACABDACABDBACABCCBACBABAABABABDABCACDCBABCCCABBDABABABCABABDBAABCACBABACBACBBCABDBACBABDDADDADBCACADABABABABACCCABDACDBABCABABDDBADCCABCABABABCACACBABABABABABCABABABABCACABABABABDCDABABBABCABABABCDABDCBADDBBBABDCCABABCABDAADCDACBCABADABABABABCDABBAABCCACBABABCAACACADBCABABACBCACDDABCDCDBACCCBAADADACABABCABABADABCABADBABABDABABDDABABDBDACBABCABDDABABABCABCABABABACBABCABCADABABABBCACADABCACACBACBDABCDCBACDBCACADABACBABDACABCABABABABABABCABCADBACADBABABCABABABABABABCABCABABABACABABDBABABABCACABACABADDABACCBACBABABCABABABACBABCADCABCABABABCABBBABABDADBAADADADABABABDBADBBACADBCACBABDABCADBABABADABABDDDCABA"
5

"..DB.BD..CB...EB....CC.B.BEAA.A.E.BEDA...DD..DB..DD.DBED....D.EB..ADD..CCAD...E.CC..B...DCE...C.C..CDCE..B..A.....DE..D.BE..E.C.C.EEB....BBCC...DE.BDD..E.A..C...ABAE..B.BD.E.DACC.BA.C..DD...EEB...E.E.CEACE.E.B......E....A..CD....B....D...D.DBCDEABA.EC.E.BCE...EDABD.B..A.CDB.DB.........E.BA.DB.BCA.CDD...B..D..DCA....EBB..........DA...BEBC..DD.A.DE.CA.E.A.DE...EE...E..C..D..C..D.ADEBC..C.ED.CAAB...DA.....C.E.EBC..C....A.CBD...C.ADDEDDADE..A.D...DDCDB....E........CA.BAAA......A..BCC.....C.EE.D..C..C.B.CDCC.C..A.DAADECAC.C.AB.A........C.D..EA.B..E...E..ADA....DBB.AB.D.EECDCBA...A..EAE.E...C..CEAC..A..BAB.CA..EC.E......BA.BC.........CA.AB....B.B...ADD.A......C...B.CEB..AAA.....E.C......C...EB.A.BE.A.BE.....DDC.E..D..BAEC..BEB....DD....B..C..D...CE.EED...CB...DE...ADDA.B.DA.E..C....A...E....DE.......BBE..ED..B.A.BC.A..A.D..C.CB.B.BA.D.....DE.EE.AA.C...D....A.B.A.EACEC.A.AA...AB.CED.C.EBED.CAC..CCCD.CBCAE.A.A.EBC....A..A....DA......C..C...E.....D....EB...D..E...C.ED..ABD....DD.A....B.ACE..ACD..D..EA..E....B..A.CDB.CDD.BD.C..A.B.B..C.A...D.DD..A..C.BE...B.CBDE.E.......BED.ED...BC....C.ABCB....C.DED..C.C....E.EEDD...C.BD.A.AED..CEA...D.DBDB.B.EE.E.C.DCE...D.EE..BA.A......D..DA.DB..C.....AD...B..BBA.CB.A..B.C.A.E.A..A.AE...D.....B..E......CC..EE.BCED..BA..BC...DD..E...A.D.EACADACD.C.DBD.C..ACCA.D.....B.ACA..ADDC..BECBADED..DC.CDADAAEB....B.DEC.C....AC..EBC...C.B..EACEDE.A..E.AAC.B.B.A..B.A.BC...EC.D.B.A.....AB.C....B........DE.A.CDE..E.ACBAC.CB.AAE.EE.E..ED.E..CAA.BCE.CEEAAD.D...CB.ABCABBC.EEAB.A...EAC..E.EDB..E.C...EC.EB.CADB.A.ECAAD.BC......ACEAEC.A.A.A.AE..E...B.E........D....EA.CED.A......BA.D.A.EC..E.....C..E.BE.E..B.A..ED.A......D..B....B.EA..E..E.BCEE....C...E...EBAE.C..E.E.BAB.....E....DE.A.EE...C..EBD.C.ACB..BAEB...CA...AD.AB..E.A.C.A.A.AD..BD....B...C.....E.AA...A.BAD.C.....C....BE..C...BA.AA.D.D.C.CCE.EE.D..DA.D...A.ADB...A....CC.BADC..E.AAD.C....BCAD.E.....AC..C...D...CDB..AAEBCA..C.A.B...EDCB..A.CCCBCE.DB.BE.DB.EAECD.AEECEA.DCCBC.BA..ECA..D..........C...DD.A..AA......BD...B.ACB.....E..ABBCE....D.DA..A...B.C.EBB....E.DDAADC.E.A"

Returns: "BADBABDABCBABAEBABABCCABABEAABABEABEDABABDDABDBABDDADBEDABABDAEBABADDABCCADABAEACCACBABADCEABACACABCDCEACBABABABABDEABDABEABEACACAEEBABACBBCCABADEABDDABEBABACABCABAEACBABDAEADACCABABCABDDABAEEBABAEAEACEACEAEABABABABEABABABACDABACBABABDABADADBCDEABABECAEABCEABAEDABDABABABCDBADBABABABABAEABABDBABCABCDDABABABDABDCABABAEBBABABABABABDABACBEBCABDDBABDEACABEBABDEABAEEABAEABCABDABCABDBADEBCABCAEDACAABABADABABABCAEAEBCABCABABABCBDABACBADDEDDADEABABDABADDCDBABABEABABABABCACBAAABABABCABABCCABABACAEEADABCABCABACDCCACABABDAADECACACBABCABABABABACADABEACBABEABAEABADABABADBBCABADAEECDCBABABABAEAEAEABACABCEACABABABABACABAECAEABABACBACBCABABABABACABABABACBABABCADDBABABABACABABACEBABAAABABABEACABABABCABAEBCACBEBACBEABABADDCAEABDACBAECACBEBABABDDABACBABCABDABACEAEEDABACBABADEABCADDACBADABEABCABABABABEABABDEABABABABBEABEDACBCACBCBABCABDABCACBABABABDABABADEAEEBAABCABADABABACBCABEACECBABAABABABACEDACAEBEDACACABCCCDACBCAEBABABEBCABABABCABABADABABABACABCABAEABABADABABEBABADABEABACAEDABABDABABDDBABABABCACEABACDABDABEABAEABACBABABCDBACDDABDACABACBABABCBABABDADDABABACABEABABACBDEAEABABABABEDAEDABABCABABCBABCBABABCADEDABCACABABEAEEDDABACABDBABAEDABCEABABDADBDBABAEEAEACADCEABADAEEACBABABABABADABDABDBABCABABCADABABACBBABCBCABABACBABEBABCABAEABADABABABABEABABABCCABEEABCEDACBABABCABADDABEABCABDAEACADACDACADBDACABACCABDABABABCACABCADDCACBECBADEDABDCACDADAAEBABACBADECACABABACABEBCABACABABEACEDEBABAEBAACABABCABABCACBCABAECADABCABABABABACABACBABABABABDEBABCDEABEBACBACACBCAAEAEEAEABEDAEABCAACBCEACEEAADADABACBCABCABBCAEEABCABABEACABEAEDBABEACABAECAEBACADBCABECAADABCABABABACEAECBABABABAEABEABABAEABABABABDABABEABCEDBABABABABABDBABECABEABABACABEABEAEACBCABAEDBABABABADACBABACBAEABAEABEABCEEABABCABAEABAEBAEACABEAEABABABABAEABABDEBABEEABACABEBDACBACBACBAEBABACABABADBABABEBABCBABABADACBDABACBABACABABAEBAABABACBADACABABACABACBEABCABABABAABDADACACCEAEEADABDABDABCABADBABCABABACCABADCABEBAADACABACBCADAEABABCACABCABADABACDBABAAEBCABACBACBABAEDCBABABCCCBCEADBABEADBAEAECDBAEECEABDCCBCABABAECABADABABABABABCABADDBABCAABABABABDABABCACBABABAEABABBCEABABDADABCABACBACAEBBABABEADDAADCAEBA"
3

"C.BAA.BABBB.B.CBA.CBCA..AC.BBBA.CCCAB.CCBB.A.ACBBBACCCCAACBCCCCBB..CC.BBBCA.BBBBBBCCCBAA.A.BB.A.AACC.BACCAA.BCABCBBAAA.CCAA...ACACABAAA.CCAABA.A.CCCAAA.ACBA.CA.BCC.BBB.BBBA.CAAB.A.AB.AACACB.CBA.BCA.CAAA.ACAABC.CAAAAC.CACABBBB.AC.BCCACB..A.CCCBBAB.BAACAB.AA..AA..C.BCCAC.ACCAB..ACACBABC..ABACAC.A..AAB.CBAACAAB.ACA.AABCBAACB.BABBBBA.AB.CBABABCCBBAA.BCC.BCAAA.A.BABCCCBBABBAC.CAB.BBAB.AC....CACACCCC.CA.AAC..BBCAA.B.BCA.CCCBAAAC.AA.AABB.CCBAB.C...CA..BB..BABCA.ACBCA.BCABAACA.BB.ABBBCBCC.BA.C..ABAAC.AB.CCC.ACAB.CBB.CA...B.ACB..ABBB.C.CBCBBC.A.AA.AC..CAB.CC.CCABC...AAA.BAAA.CACBABAACBABBBB.BBABCBBCABA.BA..B.C.BABCA.CACCBACB.BACCB.BB..AACCCAACCBCACA.CAABA.BBACC..CBABB..BABCBCBAABBCAABB.BBBCBCAACB.AAC..C.BAABB.AA.CA.CAC..A.ABCCCA.A...BAA...CAC.B...CBAABACAC.ABA..ABCC.CAAA.ACC..BAACC.CACBABABBB.C..BAB.BCA.CB.BBC..ACCA.B.C.ABBC.B.CCCACAA.CAAB.CBAC.CBCCCC.AAACCAC.A.CBBABCB.ACBBBA.BBCCC.AABA.BCAC...BBA..BC.BC.CCC..CBCCAABCC..BBABCCCC.CBBCBAABCACB.A.BBCBCACB.CABCBAAACAAB.BCCA.ABACCCBAC.CBCABA.BACAA.A.AABB.CBACBCCC...B.ABA.B..CABB.CCCCC.A.BAAABCABCAACBACBBAACACBA.C..B..C.C.ACBC.A.CCB.BBBCBCBC.BB.C..CCC.ABCBACAC.AACCAACCA.B.CBBA.CBCBCCCBB..CBCCACBAABCBA.ACBB.CC.AAC.ACA.C.AC.CABCAAB.AAA.BCBAAB.CAA.AAC.CA.AACB.ABCBACBBBB.BC.BCCAAAA.C..CABBB....CA.B.AC.ABCBBB.AA.BCB..CBBAACCBAAB.ACACCCCC...AA.CBABCACAABBCB.CAA.CCABCBBC..AABC.CA.CBC..CAABBABCBAAAAACAAACABAB.A.B.BAAC.AB...BCBAACBBCAC.ACBBBC.BA..BCC.ABCC.ACAACBBAA.BCBC.CBCACCAAC.AA.BBCBBACB.ABBACAABAAACC.CCCCBAACB.C...ABBC.CA.A.B.CAABAABACCBCB.ACBBAACAACCABC..BCAACCA.C.CA...BAACC...A..A.AABC.BC.BACB.A.BBBBBBAAABBAA.BBCCBAB.AAABBA.A.B.ACA.BCACCABAC..BB.C.CACABCBCCA...CCCB..CBA.A.CAABACBBCCC.ABB..ABBACCCBBBABBABABBBBBCBBC.BAA.ABACBA.ABCC.BBC.BCBACCB.ACCBB.CBACACAAA.CCCBC.ABA.BBAACC.AB...C.AACBCCCA.CCCBABB...B..B.CB...ACABAA.BBACCCACBAC..ABABACB.CBBBABB.CCC..A.CCCCA..BCBBBB.CCBAAAACAABBB..CAAB..B.CAA.C.BC.C.CCAABBCA.AA.CABBABCAA.BCBACB.B.C.B.BBAABABBC.BBAAAAC.ACCCAB.B.C..C.A.C.C.BACB.C.AB.AACBCBBCCBA.B.ABCBAACB..ACCBCAC.CABCCCAA.BBCAB..B.CCAC.AC.AA.ABBAC.CCBB.ABABCBCBA..B...BCAB.B..BC.BABAA.AACB.BBC..AAB.ACAAACCC.CAB...C..BA.ACCC.CAC.CCBAACBABB.BAA.CC.CB.AB.CB.B.BAC.CACBBACCCCCACCCBBACCAAABC.A.A.BABC..CA.CCCBC.BBCA.BCBA.CBAAABBABCBC.ACB.CCAA.ABBCBBCBA.BBB..AAACBCBBBC.CBAAABACC.CAC...BA.CA..CA.ACB.BBBA..ACABBCACAC.A.CABAABCBB...BBCACBBBBBBABBCA.ACB.C.CBCAB..A..B.CCB.BACBB.BBA...ACA.BCCC..B.A.B.CBAACABAAB...ACCBAAABCBCAABA.CCABB.."

Returns: "CABAACBABBBABACBABCBCABCACABBBABCCCABACCBBCABACBBBACCCCAACBCCCCBBABCCABBBCACBBBBBBCCCBAABACBBCABAACCABACCAACBCABCBBAAABCCAABABACACABAAABCCAABABABCCCAAABACBABCACBCCABBBABBBABCAABCABABCAACACBACBACBCABCAAABACAABCACAAAACACACABBBBCACABCCACBABABCCCBBABABAACABCAABCAABACABCCACBACCABABACACBABCABABACACBABCAABACBAACAABCACABAABCBAACBABABBBBABABACBABABCCBBAACBCCABCAAABACBABCCCBBABBACACABABBABCACABABCACACCCCACABAACACBBCAACBABCABCCCBAAACBAABAABBACCBABACABACABABBACBABCABACBCACBCABAACACBBCABBBCBCCABABCABABAACBABACCCBACABACBBACABACBCACBABABBBACACBCBBCBABAABACABCABACCACCABCABCAAACBAAABCACBABAACBABBBBABBABCBBCABACBABABACABABCABCACCBACBABACCBABBABAACCCAACCBCACABCAABACBBACCABCBABBACBABCBCBAABBCAABBABBBCBCAACBCAACABCABAABBCAABCABCACABABABCCCABABACBAABABCACABABACBAABACACBABABCABCCACAAABACCACBAACCACACBABABBBACACBABABCABCBABBCABACCACBACBABBCABACCCACAABCAABACBACACBCCCCBAAACCACBABCBBABCBCACBBBACBBCCCBAABACBCACABABBABABCABCACCCABCBCCAABCCACBBABCCCCACBBCBAABCACBCACBBCBCACBACABCBAAACAABABCCABABACCCBACACBCABACBACAABABAABBACBACBCCCABABCABACBABCABBACCCCCBACBAAABCABCAACBACBBAACACBABCACBABCACBACBCBABCCBABBBCBCBCABBACABCCCBABCBACACBAACCAACCACBACBBABCBCBCCCBBABCBCCACBAABCBABACBBACCBAACBACABCBACACABCAABCAAACBCBAABACAABAACACABAACBCABCBACBBBBABCABCCAAAABCABCABBBABABCACBCACBABCBBBCAACBCBABCBBAACCBAABCACACCCCCABCAABCBABCACAABBCBACAABCCABCBBCABAABCACABCBCABCAABBABCBAAAAACAAACABABCACBABAACBABABABCBAACBBCACBACBBBCABABABCCBABCCBACAACBBAACBCBCACBCACCAACBAACBBCBBACBCABBACAABAAACCACCCCBAACBACABCABBCACABACBACAABAABACCBCBCACBBAACAACCABCACBCAACCABCACABACBAACCABCABCABAABCABCABACBCACBBBBBBAAABBAACBBCCBABCAAABBABACBCACACBCACCABACACBBACACACABCBCCABABCCCBABCBABABCAABACBBCCCBABBABABBACCCBBBABBABABBBBBCBBCABAABABACBABABCCABBCABCBACCBCACCBBACBACACAAABCCCBCBABACBBAACCBABABACBAACBCCCABCCCBABBABABACBACBABCACABAACBBACCCACBACABABABACBACBBBABBACCCABABCCCCABABCBBBBACCBAAAACAABBBABCAABACBACAABCABCACACCAABBCABAABCABBABCAACBCBACBABACABABBAABABBCABBAAAACBACCCABABACABCBABCACABACBACBABCAACBCBBCCBACBCABCBAACBABACCBCACACABCCCAACBBCABACBACCACBACBAABABBACACCBBCABABCBCBABABABABCABABACBCABABAABAACBABBCABAABCACAAACCCACABABACACBABACCCACACACCBAACBABBABAABCCACBCABACBABABACACACBBACCCCCACCCBBACCAAABCBABACBABCABCABCCCBCABBCACBCBABCBAAABBABCBCBACBACCAABABBCBBCBACBBBABAAACBCBBBCACBAAABACCACACABABABCABACABACBABBBABCACABBCACACBABCABAABCBBABABBCACBBBBBBABBCABACBACACBCABABABABACCBABACBBABBABABACACBCCCACBCACBACBAACABAABABCACCBAAABCBCAABABCCABBAB"
3

".A..........C...A.........A......................C..........A..C.....................B....C...........................C...............A....................................C...........B................C.........................A..A.................A..............C......B..........................C.................CB...................C.............................A............C..............................CB..................................................................C.......................................................................C.........................C........A..................A......C......CA.........................C....................CC.................C........B.......B......C..........................C...................................................B........B..A.........A..........B..C......................................C............................................................................B...........B....A................A..............B..................A........................................................................B..........................B...........B.A..................C......A........................C..................A.....................AB....................A.......BB...B.........B....B.....A........................................................................................B...............B.........A.................................................................C...........A.C..A...C...........B.....B...............................B......A...............C.......B..B................................C..................................CA........A..B..B..C........C......................A................................................BA..A...................................A.............A.........C.C.....................A.............B...C..............B........A...B...........A.A..B..........................................B......................................B..................................BC..........................A........C...ACA..............................................C........C................A.....C........A...C............B............A.............C.........................B..................C.............................B....ACA..........C............C...................................C...............................BB.................................................A....B..B....A.........A....A............B......B............................"

Returns: "BABABABABABACABCABABABABABABABABABABABABABABABABACABABABABABABACABABABABABABABABABABABABABCABABABABABABABABABABABABABACABABABABABABABCABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABCABABABABABABABABABABABABCABCABABABABABABABABABABABABABABABABACABABACBABABABABABABABABABABABABABCABABABABABABABABACBABABABABABABABABABACABABABABABABABABABABABABABABCABABABABABABACABABABABABABABABABABABABABABABCBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABACABABABABABABABABABABABABABCABABABACABABABCABABABABABABABABABABABABABCABABABABABABABABABABCCABABABABABABABABACABABABACBABABABABABABABCABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABCABABABABABABABABABACABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBBABABABABABABABABACBABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABCABCABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABACBABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABCABABABABCABABACBABCABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCACABABABABABABABABABABCABABABABABABACBABACABABABABABABACBABABABABABACBABABABABABCABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABACBCABABABABABABABABABABABABABABABABABACABCACABABABABABABABABABABABABABABABABABABABABABABABACABABABABCABABABABABABABABABABABCABABABABABABCABABABABABACBABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABACABABABABABACABABABABABABCABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABABABBABABABABABABABABABABABABABABABABABABABABABABABABCABABABACBABABABABABABABABABCABABABABABABABABABACBABABABABABABABABABABABABABAB"
3

"C....C...B..CC......A.A..A..ABC......CB.C...A.B.CB.BBA.A..B...A..ABCC.CB...BAC...CA.C.B...BB.CA..C.A.BB..CA..CA.A.C..C....CBB.........B.........AA...BB.AA....C...AA.AB....CC..A.....A..B.B.A.BB....B.CA...C.AA....BC..BC..A..CAA.CCAC....CA.CA..B...BB.CC..BC...A..CA.C...B....A...A.B..CAA.B......C.C.....ACC.AB....C..B......BABB........B.B.A..B..BB.C....CB...C...C.CBCC.CB...CC....B..AB.B......CA.....A..B.......B...C..AC...A...BAB.B.........BC........C...A.B..C..B.CB.....BBA..AC...C.....CBC.C...............B..C..AACA....AC...A..ABC..CAA...ABB..C...A.B.B....AAC.B.BAA..C...B.BA..B...A.CB.......B..C.BA......A.C........AACB.A...CAB.......C.....B..C..B.B.......B.....B...C..C...CAA....ACC......CC...C..C.B....BCAA.B.C.C...CB.C.A......B..ACC..A.A..B.B.B.....B..A.A.B.B.....CB...A..C.BB...B....ABB.CC.........CBB..C....BB.BC.B..C...B...A...B..AB.CA..A.CA...A..BBA.......A..C.AB.A....BBBCAB..C.....CB.......A.BBB....A.B.B.......CCC..A...CA.B..B..A.....A.BC.C...CB.C.BA.BA.......A..BA....C..CAAA..AA.C.C....AC...A..C......C...B..C.B.A.....A.B.B.C..C.C..........B...ABA.BA...A..BA.B.B.B....C.AC...........B..A...........ACA..BB......C...B.C.A.ACB.CB..........B...AAB.......CC...A..A.BBA.........AA..CB....C.AC.A.CC.B....B.A..AA....C...A.....A....BBA..B..A.AB.B.BB.C.B...B..CB.....B...AB......C.A..AA..C.B...A...B.BB.B..B.BA...BCA.BA.....AC.B.C...B..ACAA..........A.....B.....CC..CA.C........C..CA......C..C.B..C..A.CABAAC..C....B..A..AB..C..B..B......C.A.CBA.AC.B.AB.B..B.BAB.BB....C.C........C.......ABA......A..AB......C.CB...BC.C.BCBA.B.BC...AC.AA...A.B.C.B...B...A...C...BA...CBC.ABC.....BA..CC.C.....AC..B.....C.BB.......A.CAAC.C..A..A.C.......C....C.B.CA..C.CC.A..C...CB....C....A...A.CB...C.....B.B..B..C...A.C.C.A.CC.....CB..C.B....AAA.BBB...C...A..C..A...A.C.B.CCB.C....AB..AC..ACCBABACBA....BA..C...CB.BA....B..BA..BA.A..AB.CB.BC.C......BB.A.CA..C....B........C..B...CB.C.B......B.ABAAA..............BABAB...........A.A.B....C.B..B..A...............CC...BCC.CB...B.....BABA..C......B.BC..CC.C....C.C......C..BC...CBB.A.....BB..B.A..B.A.CB.B..A.A....A.B..B...BA.....C.BB..B.......C.C.A..A..A.AA....AC..B.A....C...C.AAA.C.........CA.......AAB....C.B..........C.CB"

Returns: "CABABCABABABCCABABABABABCABCABCABABABCBACABCACBACBABBABABABABCABCABCCACBABABACABACABCABABABBACABACBACBBABCABACABABCABCABABCBBABABABABABABABABABCAABACBBCAABABACABCAABABABABCCABABABABABABABCACBBABACBACABABCBAABABABCACBCABABACAABCCACABABCABCABABABABBACCACBCABCABACABCABABABABABABACBABCAACBABABABCACABABCACCBABABABCACBABABACBABBABABABACBABCABABACBBACABABCBABACABACACBCCACBABACCABACBABABABABABABCABABABABABABABABABABACABACABCABACBABABABABABABABCABABABABCABCACBABCACBACBABABABBABCACABACABABACBCACABABABABABABABABABCABAACABABCACABCABCABCABCAABABABBABCABCACBABABABAACABABAABACABABABABABABCABCBABABABABABCABABABABCABCABABABABAACBCABABCABABABABACABABABABCACBABABABABABABABABABACABCABACAABABCACCABABABCCABACABCABABACBCAACBACACABACBACBABABABABABACCABABABABABABABABABABABACBABABABACBABCABACABBABABABABABBACCABABABABACBBABCABACBBABCABABCABABABCABACBABABACABCABCABABABABBABABABABABACBABCABABABBBCABABCABABACBABABABCACBBBABABACBABABABABACCCABABABCACBACBABABABABACBCACABACBACABACBABABABABABABABABACABCAAABCAABCACABABACABCABACABABABCABABABCABCABABABACBABACABCACABABABABACBABCABACBABABABABACBABABABABCBACABABABABABABABABABABABABABACABABBABABABCABABACBABACBACBABABABABACBABCAABABABABACCABCABCACBBABABABABABAABACBABABCBACBABCCABABACBCABCAABABACABCABABABABABABBABABABABABABABBACABABABABCBABABABABCABABABABCBABCAABACABABCABACBABBABACBABABACBCACBABABABACABACABABABACAABABABABABCABABACBABABACCABCABCABABABABCABCABABABACABCABABCABABCABAACABCABACBABABCABABCACBACBABABABCBABCBABACABCABABACBABABABBABABCACABABABABCABABABCABABABABCABCABABABABCACBABABCACABCBACBABCABCACBAABABACBACABABABABCABABCABABABABCBCBABCABABABABACCACABABCACACBABABACABBABABABCABCAACACABABCABCABABABACABABCABACABACACCBABACABACBABABCABABABABABCBABACABABABABACBABCABCABCACBABCCABABACBABCABABABAAACBBBABACABCABACABABABABCABACCBACABABABABACABACCBABACBABABABABACABACBABABABABACBABABABABCABACBABCACABABACBBCABCABACABACBABABABABCACBABACBACABABABACBCABAAABABABABABABABABABABABABABABABCABACBABABCABACBABABABABABABABABABCCABABCCACBABABABABABABABACABABACBABCABCCACABABCACABABABCACBCABACBBCABABACBBACBCABABCABCBABABABABABCACBACBABABABABABCABBACBABABABACACBABCABCABAABABCACACBCABABACABACBAAABCABABABABACABABABABAABABABCABABABABABABCACB"
3

".B.CCABCB......CBCBA....A..A.BCBBA....A.AB.ABBBC.CCC...A.CC..C.A.BB.B.AABBAACBBAA..A..CAACC.B.CB......BB..B.BC..A.A.....B..C......CABCABBAA.BC..C..AA.CAAAB.BACBBACB.B.CA.CCCAC...CC...BBA....BC.A.BC..BAACABACBBCA..B.B.CBA.CABC.CB..BC.AAC.B.A.ABBB.AA.C..CCACAA.CAB.C.C..BAA.A.A....B.A.....CAA..BABB.BBC.BACB.CABCC.BB.C....CAC.B.BABB.CBA.B..C..ABB..CC..CB.C.ABC...ABBA...C..A.AA..C...AA.BA.B.B.CCBC...BBB...B.C....A...CC..CBBC..B.B.....C.A.CB.C...ABC...AAAACCAC.A.ABCA..A..BA.BA..ABA..CB.C.ACBC.C...C....B..BABBA..BCA.C.CACBA.AA.BCB.CC..A..A.AAA.B.B..CAB.CBCC....CCCB.ABAACBC.CA..B..AB.AC.AACCCA.AA.A.AB..ACCBB.BCCBABA..B.A..BA.BCCCCB.AB...CBA...AC.CCB.CACC...ABC.B.ABAB.BAC..AB.BA..B.C..C.C..ACB.....CC.A.A.BBACB..C.A....B..B..B.CBA..BB..BBA.ACCA..A...BCBB..A.A.B.CBBCAAACC..BC.B.A..BAC.CCBA..C.CCC...BC.AAAAB.CA.....CCAC.CCAAB...BAABB....BA....CB...BAAAB.AC.CA.ABC....A...C.CB..CCBABA.B....CC..CAC.BBC.AC...BA.B.BC.C.BBABC.C....BA.BBC.CA..B.BC.........B.CA..B.B.BC..B.BA.ACCBBAA..CCACC.AAAAC.AAB...BC....A.C.....C..CA...AB.CA.BAACAA.A..CA.A....CCBC...BC.AC.BBC.AAABACCA.B.C.CA.CACAB..C......AAAB..BBBCB..ACC.ACBBAB..ABCB.ACCCA...BB.AB.B..BB.AA.ACAA.A..CB.C..A.B..A.BBA.AAC.CA..C..A.BB.BACC.B.AA.CCB.AAAAA.BBC.C...BABCC.BAAB.CCACAC..C.BA..C..CCC..BAA..A.AAB.ABCACB.....B.ABC..CA..A..CC..AA.A....ACBBA..B.AAB...CC..CA.CAA..AB.CB..CBCA.....B..ACCCB.ACCACBA.A..CBB..AAACC.CB.BCB.AB.B.AA..BAABBCC.A.CBC.CA.CCAA.B.A.CC.CAA...BA.B..ACB..AB.A.CB.ACBB..C.CCB...B.BAA..B..AB...C.A.A.AC..CCBAA.CC..AC.B..A.BA.BABA.BA.CABCB..A...CCABCC.AAA.BCAC.....C...A.C..A....AB.B.AABB.AACBCB.C..CB.B...A.CBCACA..A..BA..C.BC...AC..CB...BAA.BA.......A.CAC..BAC.AC.B.A.BB.CA...CAB.CB.CACA.CCA..ACCBC.BC.A...C...C..B....CCCCBAB..BCCC..BBB...CB.C..CAAACBB.C.BCCBC....B.CA..A.....AABA.ACB.CB....C.A.....AAB.B.C..B..BA.CAAB..AAC..BC....B.BCC.CACAC..B.BA..BBCC.C.....A...ABBBCB..B...C..A.C.CA..ABB.BCCB.CBB.ACB.A..A.BB.B...ABB...B.C.AA.CBBBB.A.AA.......A.....B.B.ACA.BCAC.AC......BB.AACC.....CAC.ABC.B.BA...CCC.C....B..CC.BCCCCCA.C.ACABAA.BABA.B..BB..CA..BBA..ABA...BCB.CC..C......BBBB.A.CCCCB.BCAAC.C.C.C.C.CA..A..BBAA..C.A.A.ACB.C..ACC.C.ACCB..B..BBCC..B..C...CBB..CBAC.BBCC..ABBAC..BC"

Returns: "ABACCABCBABABABCBCBABABCABCACBCBBABABCABABCABBBCACCCABCABCCABCBACBBABCAABBAACBBAABCABACAACCABACBABABACBBACBABCABABABABACBABCABABABCABCABBAACBCABCABAABCAAABABACBBACBABACABCCCACABACCABABBABABABCBACBCACBAACABACBBCABABABACBABCABCACBACBCBAACABCABABBBCAABCABCCACAABCABACACACBAABABABABABCABABABCAABABABBABBCABACBACABCCABBACABABCACABABABBACBACBABCABABBABCCABCBACBABCABCABBABABCABABAABACABCAACBACBABACCBCABABBBABABACABABABABCCABCBBCACBABABABACBABCBACABCABCABCAAAACCACBABABCABCABABACBABCABABACBACBACBCACABACABACBACBABBABABCABCACACBABAACBCBACCABABCABAAACBABABCABACBCCABABCCCBCABAACBCACABABABABCACBAACCCABAABABABABACCBBABCCBABABABCABABACBCCCCBCABABACBABABACACCBACACCABCABCABCABABABACABABABABABACABCACABACBABABACCBABACBBACBABCBABABABACBACBACBABABBACBBABACCABCABACBCBBABABACBACBBCAAACCACBCABCABABACACCBABACACCCABABCBAAAABACABABABCCACACCAABABABAABBABACBABABACBABABAAABCACACABABCABABABABCACBABCCBABACBABABCCABCACABBCBACABABACBABCACABBABCACABACBACBBCACABABABCABABABABABACABABABABCACBABABACCBBAABACCACCBAAAACBAABABABCABABABCABABACABCABABABACACBAACAABABACABABABACCBCABABCBACABBCBAAABACCACBACACABCACABABCABABABAAABACBBBCBABACCBACBBABABABCBCACCCABACBBCABABACBBCAABACAABABACBACABACBABACBBABAACACABACABACBBABACCABCAABCCBCAAAAACBBCACABABABCCABAABACCACACABCABABACABCCCACBAABCABAABCABCACBABABABCABCABCABCABACCABAABABABCACBBABABCAABABACCABCABCAABCABACBABCBCABABACBABACCCBCACCACBABABACBBABAAACCACBABCBCABABCAABABAABBCCBABCBCACABCCAACBCABCCACAABACBACBABACBABABCABCBCACBBABCACCBABABABAABABABABABACBABABACABCCBAABCCABACABABACBACBABACBABCABCBABABABCCABCCBAAACBCACABABACABCABCABABABCABABCAABBCAACBCBACABCBABABCABCBCACABCABABABACABCABCACABCBABABAACBABABABABABCACACBACBACABCACBBACABABCABACBACACABCCABCACCBCABCBABABCABACACBABABCCCCBABACBCCCACBBBABACBACABCAAACBBACABCCBCABACBACABCABABABAABABACBACBABABCBABABABAABABACACBACBABCAABABAACACBCABACBABCCACACACACBABABABBCCACABABCABABABBBCBACBABACABABCACABCABBABCCBACBBCACBCABCACBBABABCABBABABACBAABCBBBBCABAABABABABABABACBABCACACBCACBACABABACBBCAACCABABACACBABCABABABABCCCACABACBABCCABCCCCCABCBACABAACBABACBACBBABCABABBABCABABACBCBACCABCABABACBBBBCABCCCCBABCAACACACACACACABCABABBAABACBABABACBACABACCACBACCBACBACBBCCACBABCABACBBABCBACABBCCABABBACACBC"
10

"..AGE.FEIBDHICGC.GGFA.IJGIACBHGGE..CG.H.H.DJHE.F.G.FAIEDH.GB.GGCCB.FH.AD.IGB.I.JDBFHFJ.CABC...J.AHJJC.B.GDA.AB.BDBC.IH.B..B.HICACDC.CBHI...HC.D.CFFJ.ABIFGHG..CH.G.HF..EE.IAD.H.HJBJEAA.G..C.ADEDE.AJFEI.EBBEEGFCEE.HBAEIBJDDIB...EGGDBHGD.EDHBHE.FDBBDEIJC.DFCJFBE..B.EE.DFDI.JBGDHBJ.GEAEECH..CI.EEIBC.F.DD......JAGJG.FJJ.J.A.DAIC.H.IJBHED.F.E.EGA.JCIB..GH.CFJAJ.AHGJDFE.D.GI.E.D.ACEC..JJFJFFGFEHB..BHG.EB.D.A.F.EABB..GB....HE...II.HG.B.AJIJ...GFJH.A..IH.GB..J...G..EEAF.BAI.BJJJHA.HJAGFA.G..IH.HCHFJJC..IAF.HJFAB.F.CDD.HGHBE....IBICED.DAA.HDIADEFJFCJ..H.CA.IJCCGIC.D.HFFCFFG..C.AFIGDHCADCGB.BBI.ED.AE...H.FJFJBJGC..JBJJH....E.EDD.E..EJG.CIGIBCBF.GH.G.JBI....JBJJD.C..AE.HEE.C.IH.II.BB.HF.HB.AHDGIIJ.A.IABEH...BGDI.GI.JIJA.FCGCICFEEGGEBCBBHHAEHEFGGHIGD.IBDFDBDGJDGBDB.CF.G.IH.I...JBDJ.H.C.GHIGHGAAJEGH..AJ.BH..AJ.DHEEF.E..DG..EDDHCDI.JEGCHF....EHFCJDCJBFGCIJICAJ.H.I.GBBAI..FABJI.EJHIA..HID.B..B..B.A....CEAADBDCJGD..B.CA.IG.GCA.B.FBEHEEAJHAGDEHBAHFHHGE.I.EDHHAJHB..CIAG.J..DDBHFJI.HE.GGEAEDFH..C..J...JC.HJ.DA.JFE..B.C.JHHFFIAA.EG..C.CIHIED..C.G.BG...IJD.H...GJ.JBDGBFCEH.A....EGBJJG...A.E.HI.GD..A.GBBJAF.BHD.JB..AE.BBDIJEEAEGCAI...AHC.ECCAHJGBC....HA.D....AE.GCJCCEAAEJGB....CII..GJIBAG.D.EBC.H.DFIC.IAHBHE..IIBGBDDFD.GI...IC.HA..IBG.CGF.CD..IHFD.ICJBEBC..DFFGEJEDA.BC.AB.AGHBIAG.J...D..DE.IEIHIG.H.ICJFG.BGBFIH.HABDGCFFG...AFH..JJHGH..F..JIF.FCG...CFFB..E.A...JB.C.CDC.HC.D.F.CHIH.BA.I.F.JJFJCBEDAFE.BH...JGEH..EBAED.BAGJF.HFDF...E.E.FJF.HGH.E.JA..B.E..GD.GCIIIEE.EIE..E....IAFJ.CF.A.EDCEDAGHCIH.I.C..EB..JEFHA.E.AJ.H.B.AH.HJAFHE.BECC......EBA.IDEHGCF..BCH.JGBFJI.J.EJ.J.AJBDGCJGJAICDDI..HJADEE.GE.IDBE..EG.DH.GCDCDH.BCEA.BFCIH.JJ.ACGEG.IFHB..HJBH.FJIDGJCIC.B.HHG.CA..AHHJ..IEDABI.I.B.BIJG.D.HDGI.E.....DF.JCDIEAA.GAFD.IE..D..DB.A..BC....HAJBB.G.CAC.EJBHBB..DACC.BB..DH..FEI.IDAJ.H.E..GEFGGHAFACHDEE.DF.EFE.BCAJDAJ.IEAH...IF.IEIJAJGFEAIFF.E.I.FC.JHEDFFAH.BF.I..CAJ..EAHHFJI.GAI.C.I..HAAJE.GHE...D.BEDBHDJFA.AI.FD...FE..FDHJBGFJ.FE...EGJEB.HI..HDGAFA.CCDDAII.FBEFA.DC.A.IA.CIFCC..GBI..CC.H.IIAIB.B.D.CH...HGE.GBE..IG.EAEJ.B.HAH.EED.J..DH.D.AFIJJED..AHAI.JECIEFCCG.I.G..IFCFDHH.JCHAD.G...DGGJA.HDE..FIF.G.H.ED..BAB......IG..E..II.IHEEAJ.DJ.EC.GAEEGHA.JIGAD.C.DG.C..FJIFI.HFAC..CEJHEACHGAH.JDHJ..A.D.DFEH.CICDDG.EABHCBBDA..IE.B.AJ.FIHA..ICG.J.DBG.DHABE.C.B.HH.HJ...DG.IJIJIFHBD.C.C..ICF"

Returns: "ABAGEAFEIBDHICGCAGGFABIJGIACBHGGEABCGAHAHADJHEAFAGAFAIEDHAGBAGGCCBAFHBADAIGBAIAJDBFHFJACABCABAJBAHJJCABAGDABABABDBCAIHABACBAHICACDCACBHIABAHCADACFFJBABIFGHGABCHAGAHFABEEAIADAHAHJBJEAABGABCBADEDEBAJFEIAEBBEEGFCEEAHBAEIBJDDIBABAEGGDBHGDAEDHBHEAFDBBDEIJCADFCJFBEACBAEEADFDIAJBGDHBJAGEAEECHABCIAEEIBCAFADDABABABJAGJGAFJJAJBABDAICAHAIJBHEDAFAEAEGABJCIBABGHACFJAJBAHGJDFEADAGIAEADBACECABJJFJFFGFEHBACBHGAEBADBABFAEABBABGBABABHEABAIIAHGABCAJIJABAGFJHBABAIHAGBABJABAGABEEAFABAIABJJJHABHJAGFABGABIHAHCHFJJCABIAFAHJFABAFACDDAHGHBEABABIBICEDADAABHDIADEFJFCJABHACABIJCCGICADAHFFCFFGABCBAFIGDHCADCGBABBIAEDBAEABAHAFJFJBJGCABJBJJHABABEAEDDAEABEJGACIGIBCBFAGHAGAJBIABABJBJJDACABAEAHEEACAIHAIIABBAHFAHBCAHDGIIJBABIABEHABABGDIAGIAJIJABFCGCICFEEGGEBCBBHHAEHEFGGHIGDAIBDFDBDGJDGBDBACFAGAIHAIABAJBDJAHACAGHIGHGAAJEGHABAJABHABAJADHEEFAEABDGABEDDHCDIAJEGCHFABABEHFCJDCJBFGCIJICAJAHAIAGBBAIABFABJIAEJHIABAHIDABACBACBCABABACEAADBDCJGDACBACABIGAGCACBAFBEHEEAJHAGDEHBAHFHHGEAIAEDHHAJHBABCIAGAJABDDBHFJIAHEAGGEAEDFHABCABJABAJCAHJADABJFEACBACAJHHFFIAABEGABCACIHIEDABCAGABGABAIJDAHABAGJAJBDGBFCEHBABABAEGBJJGABCABEAHIAGDABABGBBJAFABHDAJBABAEABBDIJEEAEGCAIABCAHCAECCAHJGBCABABHABDABABAEAGCJCCEAAEJGBABABCIIABGJIBAGADAEBCAHADFICAIAHBHEABIIBGBDDFDAGIABAICAHABAIBGACGFACDABIHFDAICJBEBCABDFFGEJEDACBCBABCAGHBIAGAJABADABDEAIEIHIGAHAICJFGABGBFIHAHABDGCFFGABCAFHABJJHGHABFABJIFAFCGABACFFBABEBABABJBACACDCAHCADAFACHIHABABIAFAJJFJCBEDAFEABHABAJGEHABEBAEDABAGJFAHFDFABAEAEAFJFAHGHAEAJABABAEABGDAGCIIIEEAEIEABEABABIAFJACFBABEDCEDAGHCIHAIACABEBABJEFHABEBAJAHABCAHAHJAFHEABECCABABABEBABIDEHGCFACBCHAJGBFJIAJAEJAJBAJBDGCJGJAICDDIABHJADEEAGEAIDBEABEGADHAGCDCDHABCEACBFCIHAJJBACGEGAIFHBABHJBHAFJIDGJCICABAHHGACABCAHHJABIEDABIAIABABIJGADAHDGIAEABABADFAJCDIEAABGAFDAIEABDABDBCABABCABABHAJBBAGACACAEJBHBBABDACCABBABDHABFEIAIDAJAHAEABGEFGGHAFACHDEEADFAEFEABCAJDAJAIEAHABAIFAIEIJAJGFEAIFFAEAIAFCAJHEDFFAHABFAIABCAJABEAHHFJIAGAIACAIABHAAJEAGHEABADABEDBHDJFABAIAFDABAFEABFDHJBGFJAFEABAEGJEBAHIABHDGAFABCCDDAIIAFBEFABDCBABIABCIFCCABGBIABCCAHAIIAIBABADACHABAHGEAGBEABIGAEAEJABAHAHAEEDAJABDHADBAFIJJEDABAHAIAJECIEFCCGAIAGABIFCFDHHAJCHADAGABADGGJABHDEABFIFAGAHAEDACBABABABABIGABEABIIAIHEEAJADJAECAGAEEGHABJIGADACADGACABFJIFIAHFACABCEJHEACHGAHAJDHJABABDADFEHACICDDGAEABHCBBDABAIEABCAJAFIHABAICGAJADBGADHABEACABAHHAHJABADGAIJIJIFHBDACACABICF"
20

"B...........J......GQQ.....T..SGO.QB...N.K..........ME..D.......HC.......R.....G.P.H.......J.F.....B.......F.P....J.JN.......O.H.....I..A....IQ..N.....G.Q....T.Q......I...LPS.....GB...........PHP..................F......KP....EM.....C..D.....N....S.E.P.B..D.Q...I..K.....Q...J....JR..........FAL......R.H......P.D..R.C.R..........F..H.H...L..........LI...K......T....B...D....T...C...F....L..JGQ.....J......B.S....JM.G........J...EP.A.NA.....L.A....MN...B.......A.FE..NC.L...P........N.........P.T.........P.....F....B........T.........B.R.Q.....I.......R..D.O.A.KS.....Q....O........L..R........E............A..E................D.....LS..M...B............O.IOQC....F...............A..Q.E..E.JJ.F..D.....C.D.....L..G.C...L.....O.O..NH....H....J.....ML.....................R..R.F.C..........A.Q..GM.J.....T...L...J....Q....QO....B.T.....M......RL...DI......I...Q....K.M.......BR...C..T.....E........DO..N..E...P.....T.ICMF...T.........J..T.E......L..HT......S..A..IG..P..NQ.S.Q...........M.....T....A.P..M.L.FS..D......S....C.........T..D....G.D.JK.IE..B.....C....S........G............RT..E.T....F.P.K..K.FF..........FA...R......D..KJS..LD....F..HB...I.....O..IF.SHB.OL.B......A......K..O.JD.......R.....T.BRO......N..R...M....F..T........M.T.J.A.....L...PC.....N..T.F....CB.R....L...GD.M...M.....F.L.H..G....I..OBKE..N.....N.........C...D.M....P.....OS..........G....I........T....KM....GKQ...................N..............R.R...O..R............T..A....R..R...S.M..B........L...................I..D.....N....RBQ..............................QT.LJ..LLI.O...H.J......E....R...IO....NM..T...S...P..GL......CO....B.......F.........T..R...RR..N.....B..B...R....N.G......J.O.......C......EB........SF.....DP....FC.B..........L.ESG..Q..K............K.....QI.........M....L...T...N..BB..G......TA.....R...C..N..B.FN.......E........FT.......K......B....H.....K.........K......T..P...............M..SP.I..OP.IA...M.............N.E.L..G............ESM......AB.P.......J..NC............N........B............O.....NOKL........I..K.......F.A.R.C.........TA.K.N......HT.......H.BQ.S....B............NI....N.D.H..H.JD..CA.........L....J.HSGGBMC..G.GO.......KD........SFD....N.......F.....TO......T...RN...L.............T.K.E.S..........J...C......J.S..S......M..BC.Q....O.....A..H......................B........M...........Q.....Q........RD....A..F.OB..N...L...K............"

Returns: "BABABABABABAJABABABGQQABABATABSGOAQBABANAKABABABABABMEABDABABABAHCABABABARABABAGAPAHABABABAJAFABABABABABABAFAPABABJAJNABABABAOAHABABAIABABABAIQABNABABAGAQABABTAQABABABIABALPSABABAGBABABABABABAPHPABABABABABABABABABFABABABKPABABEMABABACABDABABANABABSAEAPABABDAQABAIABKABABAQABAJABABJRABABABABABFALABABABRAHABABABPADABRACARABABABABABFABHAHABALABABABABABLIABAKABABABTABACBABADABABTABACABAFABABLABJGQABABAJABABACBASABABJMAGABABABABJABAEPBABNABABABLBABABAMNABABABABABCABFEABNCALABAPABABABABNABABABABAPATABABABABAPABABAFABACBABABABABTABABABABABARAQABABAIABABABARABDAOBABKSABABAQABABOABABABABLABRABABABABEABABABABABABABAEABABABABABABABABDABABALSABMABABABABABABABABOAIOQCABABFABABABABABABABCABAQAEABEAJJAFABDABABACADABABALABGACABALABABAOAOABNHABABHABABJABABAMLABABABABABABABABABABARABRAFACABABABABABABQABGMAJABABATABALABAJABABQABABQOABACBATABABAMABABABRLABADIABABABIABAQABABKAMABABABABRABACABTABABAEABABABABDOABNABEABAPABABATAICMFABATABABABABAJABTAEABABABLABHTABABABSABABAIGABPABNQASAQABABABABABAMABABATABABABPABMALAFSABDABABABSABABCABABABABATABDABABGADAJKAIEACBABABACABABSABABABABGABABABABABABRTABEATABABFAPAKABKAFFABABABABABFABABRABABABDABKJSABLDABABFABHBABAIABABAOABIFASHBAOLABABABABABABABAKABOAJDABABABARABABATABROABABABNABRABAMABABFABTABABABABMATAJBABABABLABAPCABABANABTAFABABCBARABABLABAGDAMABAMABABAFALAHABGABABIABOBKEABNABABANABABABABACABADAMABABPABABAOSABABABABABGABABIABABABABTABABKMABABGKQABABABABABABABABABANABABABABABABABRARABAOABRABABABABABABTABABABARABRABASAMACBABABABABLABABABABABABABABABAIABDABABANABABRBQABABABABABABABABABABABABABABABQTALJABLLIAOABAHAJABABABEABABRABAIOABABNMABTABASABAPABGLABABABCOABACBABABABAFABABABABATABRABARRABNABABABACBABARABABNAGABABABJAOABABABACABABABEBABABABABSFABABADPABABFCABABABABABABLAESGABQABKABABABABABABKABABAQIABABABABAMABABLABATABANACBBABGABABABTABABABRABACABNACBAFNABABABAEABABABABFTABABABAKABABACBABABHABABAKABABABABAKABABABTABPABABABABABABABAMABSPAIABOPAIABABMABABABABABABANAEALABGABABABABABABESMABABABABAPABABABAJABNCABABABABABABNABABABACBABABABABABABOABABANOKLABABABABIABKABABABAFBABRACABABABABATABKANABABABHTABABABAHABQASABACBABABABABABABNIABABNADAHABHAJDABCABABABABABLABABJAHSGGBMCABGAGOABABABAKDABABABABSFDABABNABABABAFABABATOABABABTABARNABALABABABABABABATAKAEASABABABABABJABACABABABJASABSABABABMACBCAQABABOABABCABAHABABABABABABABABABABACBABABABABMABABABABABAQABABAQABABABABRDABABABAFAOBABNABALABAKABABABABABAB"
26

"..C.TLQ...D.PF...G...G...KGWY..C........Y.MFP..WOA.....M...BX....I.....MAG.L.....N....W..MXH.PX...XS.D...SP...BFH......J.B......Y.SFWZO.RS..B.A.Y.EY.KT..E..QC..DBO....SJ.F....RW...YP.P.E......J..K.AR.QT..I.G.A.MR.ACC.G.SCX..B...EL.P..WAV..CP...E.VU..VVTQ...VWO.U.OTL.....X.V..JZTMW..JD.FP......P.YTBY.PYMY.....JVHD.XVH...KWAZO....BQ.U..XB...PMT....HQ..Z.RT.Z.ZE.K..JV.PNK.....DYY.R...Q........QN...IY...M.LVBK..PT..NG.P.T...AKGE.DL.P.I..U.MM.Z......TCE..IP.QW..ZF.XHETY..F..YBP....V..ZJNVSI..W.U.Q.U.Y.O.Y.RQ..F.........JJO...XKK.NS...NXAE.....W.S...U....I..C.EPG.....K.....F.Z.SA.HM.OL.X.OH.X....BEE..GQ.X.J..TTY.OHSD.U...W.Z.Z.BSD.......IO..GAR..LZDOYLE.TR.Q.HR.M..P..AY.B...U...YP..R.RW.XRKIPNROQ.CB...YE...AFJEFV........J.Y..O...MTSL.GU.ZKF........SN.MW.....UD..EN.OJLVO.....W.P....F...E..L.FQ.....EI.N.NC..Y....E.LAX.....W.W.P.L....G....QKYB..LYNA...UNA.DPC...LPP...RCV......F.........ON.XXP.Y....IR.L.R.Q......EHC.IKPO.WNUCOR.WIA...C...I.......NUWE.R....H.....GP...IV...Z...F....E.H..Y..C..JTQ.XU.EW..QKOK..AN....O.HBL....O....B.K....AR...I...Z..F.X.....D.P.USS..C..I.S.XDF.AH.C..Q.M..ZSD...SX...KX...RZNP...QT.QN.Y.HIKW.A.HL.WK...I.G....M....I.LU..O.APUP.E.V...HZPXW.P.NWA...A...V.B...STOS.X.DQG....G..G..G.OWQQERG.DH.......GM......VC...R.L.FS.I.WD...T..UK...B.IR.Z.N.....EKEJ.T.GILHE.P.TN.J.NFRZQ...J..BTZ.BY.G...ODS...JO..OTTXK.T......MKT..L...WQX.....D...S.TFLMJG...VDK....O..WW.PS....A.TPG.............IMHP...PZZR...CB..S.KEV.U...R.NF.F.SJ.R.ISWU.CO.MK.GP.A...X..C.HEK..XO..O...DB..T..J......J..N.PEVC...S..L..PY...J...BYM....E....J.....L.UN..C....S.M.......OY....ET.Q.BFOK.K..N.....KGLTH.TA..P......L....X.KG.LJIZ.D.LDZOV.X.HBAM.....G...N...D.L....U.L...H.BW.W..D.UA..Q.A..L.FW.WUHZ.F..A.R.F......NA.W..A.ISM....D.MTSJ..H..D...R.C.Y.C.HXP.RXVTG..Z.M......FSAJ...C.VU....D.E.VK...I.R.XSD.R.XP....D........A.J..U..H..O...ER...L.K.Z..K....QHZ.N..M.ZVKN....R.NRVFI..QNBH.....SPK.U.QJG.W..QBE.V....F.AT..D.H.B....A..TVH.Y.OLSD.J..EQ.H...S..X.NI.CJCOK.RALC......B..YN.B.....S...OG.........B.P..VY..DG.B...CP.V..AH......X..RRLNA.R..L.KG..DY...DN.SU.NN.WYEFT.C..F..W.CRCJNND.T..L....J.JBEXL.JVDYR.ALOFZE..Q.I.R.EQ..L......X.TMYFU.TZ....E.H...NX."

Returns: "BACATLQABADAPFABAGABAGABAKGWYABCABABABABYAMFPABWOABABABMABABXABABIABABAMAGALABABANABABWABMXHAPXABAXSADABASPABABFHABABABJABABABABYASFWZOARSACBCABYAEYAKTABEABQCABDBOABABSJAFABABRWABAYPAPAEABABABJABKBARAQTABIAGBABMRBACCAGASCXACBABAELAPABWAVABCPABAEAVUABVVTQABAVWOAUAOTLABABAXAVABJZTMWABJDAFPABABABPAYTBYAPYMYABABAJVHDAXVHABAKWAZOABACBQAUABXBABAPMTABABHQABZARTAZAZEAKABJVAPNKABABADYYARABAQABABABABQNABAIYABAMALVBKABPTABNGAPATABCAKGEADLAPAIABUAMMAZABABABTCEABIPAQWABZFAXHETYABFABYBPABABVABZJNVSIABWAUAQAUAYAOAYARQABFABABABABAJJOABAXKKANSABANXAEABABAWASABAUABABIABCAEPGABABAKABABAFAZASABHMAOLAXAOHAXABACBEEABGQAXAJABTTYAOHSDAUABAWAZAZABSDABABABAIOABGARABLZDOYLEATRAQAHRAMABPABAYABABAUABAYPABRARWAXRKIPNROQACBABAYEABCAFJEFVABABABABJAYABOABAMTSLAGUAZKFABABABABSNAMWABABAUDABENAOJLVOABABAWAPABABFABAEABLAFQABABAEIANANCABYABABEALAXABABAWAWAPALABABGABABQKYBABLYNABABUNABDPCABALPPABARCVABABABFABABABABAONAXXPAYABABIRALARAQABABABEHCAIKPOAWNUCORAWIABABCABAIABABABANUWEARABABHABABAGPABAIVABAZABAFABABEAHABYABCABJTQAXUAEWABQKOKABANABABOAHBLABABOABACBAKABABARABAIABAZABFAXABABADAPAUSSABCABIASAXDFBAHACABQAMABZSDABASXABAKXABARZNPABAQTAQNAYAHIKWBABHLAWKABAIAGABABMABABIALUABOBAPUPAEAVABAHZPXWAPANWABABABABVABABASTOSAXADQGABABGABGABGAOWQQERGADHABABABAGMABABABVCABARALAFSAIAWDABATABUKABABAIRAZANABABAEKEJATAGILHEAPATNAJANFRZQABAJACBTZABYAGABAODSABAJOABOTTXKATABABABMKTABLABAWQXABABADABASATFLMJGABAVDKABABOABWWAPSABABABTPGABABABABABABAIMHPABAPZZRABACBABSAKEVAUABARANFAFASJARAISWUACOAMKAGPBABABXABCAHEKABXOABOABADBABTABJABABABJABNAPEVCABASABLABPYABAJABABYMABABEABABJABABALAUNABCABABSAMABABABAOYABABETAQABFOKAKABNABABAKGLTHATABAPABABABLABABXAKGALJIZADALDZOVAXAHBAMABABAGABANABADALABABUALABAHABWAWABDAUABAQBABALAFWAWUHZAFABABRAFABABABNABWABABISMABABDAMTSJABHABDABARACAYACAHXPARXVTGABZAMABABABFSAJABACAVUABABDAEAVKABAIARAXSDARAXPABABDABABABABABJABUABHABOABAERABALAKAZABKABABQHZANABMAZVKNABABRANRVFIABQNBHABABASPKAUAQJGAWABQBEAVABABFBATABDAHABABABABATVHAYAOLSDAJABEQAHABASABXANIACJCOKARALCABABACBABYNABABABASABAOGABABABABABAPABVYABDGABABACPAVABAHABABABXABRRLNABRABLAKGABDYABADNASUANNAWYEFTACABFABWACRCJNNDATABLABABJAJBEXLAJVDYRBALOFZEABQAIARAEQABLABABABXATMYFUATZABABEAHABANXA"
10

"J.EIFJDHHAIEBGDFIIIBEAHBCFB.GFDH.FJEI.HDAAEEJJDDIJ.GAHFFGJHE.JAH.I.D.JBIGGDH.BEJFAB.DCIBEEJGIFICCCHAFEHACHJAHJDFHBDHGIFBDACDDDAEIAI.JIGIBIEJGJEDCCBBBE.DBI.I.DCBGGAEI.CFB.JIFIICDAHCGFJHCAGBACDHJ.JABIDCBAFDIJ..EABEAIDEC.FIBHCBAAHABGDI.IDHCJDDHB.IF.BBAGGGBDFGBB.DDJDCJDAJCEHF.EDGCFIGFFECBGCCHGAEJAJFEGBFFGHHEC.D.FGIJIE..CDGABCFHAAHBDGJHHCFIJ.DFHEJBGIIIGAJAAJGAIFHAH.EACFAIAJDBJB.D.ECGDBAFAF.DAABDJDGBEAFDDHJEDEA.IDBJ.CCEFHJDDFICBFGIBHACEGD.DJDIIJGHJF.HEHCBEJEJFJFCDGFCDDIHCFHF.CGIBGDFCGEBBIFHJ.FHE.ABJGBAIIFDD.EGIEB.JACDAAEGHCGHCBDHGFDDDDFIEEDBHEBIDIFAEGHAJHFHFJBEBHG.IEDBGFJ.EDBCEACCEA.AGHD.GC.EAFFFHCGEJEACJDA.IEIDEGJBEHEDHFJCEHFC.DJGGHAI.F.CGI.FGDIIABJCGHG.EI.BIGGD.BIACBEJFA.CBAHBGBDBFEF.BGDJIEJBFGDAHGFHEDACBHC.JEEFJDEEBAFFHJHJIDIEHC.GEIBHGDDGI.C.GA.GDCDGHH.H.AD.BB.GCIGCBAGF.EAGFEADJIDFIE.CFC.IJGHBBDFHEIBCIDFH.B.IFFHJHEDGDJCDAIH.HGADBDHBJHGHJHI.EJABBEFEDEBEHBIAEBEAG.GHBEHGABBFACHACDEIJFBHHBCBEBAFI.IAB.ICI.CCFICF..J.ADIGJ.AHDGCFEEICJABCABBC.JCHCJEDGE.BIECIEHJEJCJIACFH..DFGEBDCIEADDIBEGC.CGA..FI.ECCEECHFEHICHBFEJFGJABGBEECFJJGJ..HBHEBCIIIIAJHDDIJFAGAI.ECBACGDDDBFEFJJECAB.BEFDAF.ADGAAB.I.IFFEBH.E.CEFJACDJIHEABAAAHI.CHEGFECIAABJAFADGC.IIA.IJJICFJDIIJHJAIAJBCCJEBCGJBF.BJGJFAFJACGAHD.AIFED.DHHEEEEF.DHCBJBBAAFCCJDCCBIGGCFFIGHHJGB..IFC.EGFJF.EBJFCAJIGHDJF.GBAAE.DIIJFFDDCBAFEDJC.H.GEDHCFJHBJGAHJABIAFJIB.JICCCGFDHADDFCC.EGDACBDHE.IBIFIIEAGJEFGGEEIIIACFEIHHDJBCA.AECEADEG.DGF.JII.AIFEFDBA..GDFJIE.CC..EFHFEAIFICGHCA.HHJEGH.IEGCAAFIAFEGBCCHBCHJEGBAECIHIIABFCGHIFDFCDBBEAHEBCBBFIBJEDHC.D.DHBJA.GCIAIJ.H.BAB.H.BAHEIG.JECEHCJHGGHHHJEFFEHDC.G.HACJDFCADHGCGAE.EBDGDIE.GEIICEDECJFIAHBEDIHJ.HGJ.ACJAFBCC.AGIHHBBDDDDGIDFB..CAIH.FBHCC.D.JIJDBJBJEFDIEJAEJGG.DFDHCGBIBFHEDCC.ABBHBBFEJJFGACBJJDDJAEHCDJEG.BGIFCHFHHIDFEE.DDBC.DBJBJGHAJGABGIBAAI.IDE.EFEH.EJJGDIHG.G..GAAGJCHGCDEGCFGAHHAIBGCCCCEEBAGDIEEIBJHEEDACGIDCJBBFGF.ABFGDCDGDADBDDJCCJICAGEBE.DJEDGCBACEBAFFHAGHFBCBHAHCHAHIHEHFIHAGJDAEDH.BCFEGJIAGDHIH.JH.BAFABJC.JJGFCF.BFJBDCEIJJF.FDCAFFJ.C..DAGE.HHIHEEA.IED.CDGBBBIBEGACHFBACEC.BGEIGJFEHHC.CABCJFIIADIFC...G.IJ.FIA.BFCEBCFC.AH.BFJDIAHDFBIJBIADBGHCJDCJCDIFFEAHHIJIAIBJHBGFCFEEIFI.JBBACEEADAJCGEJFAIIJG.IFDE...AIGIIDIAAGBHCHE.JCBGDHDICCAAEAGCJ.FEC.IDEADCICFAJHDJDHGGGECJJJDGIG.AGBFH.BIDEGGBCCGIAHHHGFFBJD..BAEJDFG.GCHDFEBCCAFF.HFHBBCDIHDDBCAFGD.JFGBFJFDDGDGICCDBDJ.BFJAAJBBGADDAEHDE.FCHAGHBGFDC.BBHBADFCDBABFIBGFCGCECACDI.HIDF.AHEEHJDEBJEA.HJ"

Returns: "JAEIFJDHHAIEBGDFIIIBEAHBCFBAGFDHAFJEIAHDAAEEJJDDIJAGAHFFGJHEAJAHAIADAJBIGGDHABEJFABADCIBEEJGIFICCCHAFEHACHJAHJDFHBDHGIFBDACDDDAEIAIAJIGIBIEJGJEDCCBBBEADBIAIADCBGGAEIACFBAJIFIICDAHCGFJHCAGBACDHJAJABIDCBAFDIJABEABEAIDECAFIBHCBAAHABGDIAIDHCJDDHBAIFABBAGGGBDFGBBADDJDCJDAJCEHFAEDGCFIGFFECBGCCHGAEJAJFEGBFFGHHECADAFGIJIEABCDGABCFHAAHBDGJHHCFIJADFHEJBGIIIGAJAAJGAIFHAHAEACFAIAJDBJBADAECGDBAFAFADAABDJDGBEAFDDHJEDEABIDBJACCEFHJDDFICBFGIBHACEGDADJDIIJGHJFAHEHCBEJEJFJFCDGFCDDIHCFHFACGIBGDFCGEBBIFHJAFHEBABJGBAIIFDDAEGIEBAJACDAAEGHCGHCBDHGFDDDDFIEEDBHEBIDIFAEGHAJHFHFJBEBHGAIEDBGFJAEDBCEACCEABAGHDAGCAEAFFFHCGEJEACJDABIEIDEGJBEHEDHFJCEHFCADJGGHAIAFACGIAFGDIIABJCGHGAEIABIGGDABIACBEJFABCBAHBGBDBFEFABGDJIEJBFGDAHGFHEDACBHCAJEEFJDEEBAFFHJHJIDIEHCAGEIBHGDDGIACAGABGDCDGHHAHBADABBAGCIGCBAGFAEAGFEADJIDFIEACFCAIJGHBBDFHEIBCIDFHABAIFFHJHEDGDJCDAIHAHGADBDHBJHGHJHIAEJABBEFEDEBEHBIAEBEAGAGHBEHGABBFACHACDEIJFBHHBCBEBAFIAIABAICIACCFICFABJBADIGJBAHDGCFEEICJABCABBCAJCHCJEDGEABIECIEHJEJCJIACFHABDFGEBDCIEADDIBEGCACGABAFIAECCEECHFEHICHBFEJFGJABGBEECFJJGJABHBHEBCIIIIAJHDDIJFAGAIAECBACGDDDBFEFJJECABABEFDAFBADGAABAIAIFFEBHAEACEFJACDJIHEABAAAHIACHEGFECIAABJAFADGCAIIABIJJICFJDIIJHJAIAJBCCJEBCGJBFABJGJFAFJACGAHDBAIFEDADHHEEEEFADHCBJBBAAFCCJDCCBIGGCFFIGHHJGBABIFCAEGFJFAEBJFCAJIGHDJFAGBAAEADIIJFFDDCBAFEDJCAHAGEDHCFJHBJGAHJABIAFJIBAJICCCGFDHADDFCCAEGDACBDHEAIBIFIIEAGJEFGGEEIIIACFEIHHDJBCABAECEADEGADGFAJIIBAIFEFDBABAGDFJIEACCABEFHFEAIFICGHCABHHJEGHAIEGCAAFIAFEGBCCHBCHJEGBAECIHIIABFCGHIFDFCDBBEAHEBCBBFIBJEDHCADADHBJABGCIAIJAHABABAHABAHEIGAJECEHCJHGGHHHJEFFEHDCAGAHACJDFCADHGCGAEAEBDGDIEAGEIICEDECJFIAHBEDIHJAHGJBACJAFBCCBAGIHHBBDDDDGIDFBABCAIHAFBHCCADAJIJDBJBJEFDIEJAEJGGADFDHCGBIBFHEDCCBABBHBBFEJJFGACBJJDDJAEHCDJEGABGIFCHFHHIDFEEADDBCADBJBJGHAJGABGIBAAIAIDEAEFEHAEJJGDIHGAGABGAAGJCHGCDEGCFGAHHAIBGCCCCEEBAGDIEEIBJHEEDACGIDCJBBFGFBABFGDCDGDADBDDJCCJICAGEBEADJEDGCBACEBAFFHAGHFBCBHAHCHAHIHEHFIHAGJDAEDHABCFEGJIAGDHIHAJHABAFABJCAJJGFCFABFJBDCEIJJFAFDCAFFJACABDAGEAHHIHEEABIEDACDGBBBIBEGACHFBACECABGEIGJFEHHCACABCJFIIADIFCABAGAIJAFIACBFCEBCFCBAHABFJDIAHDFBIJBIADBGHCJDCJCDIFFEAHHIJIAIBJHBGFCFEEIFIAJBBACEEADAJCGEJFAIIJGAIFDEABCAIGIIDIAAGBHCHEAJCBGDHDICCAAEAGCJAFECAIDEADCICFAJHDJDHGGGECJJJDGIGBAGBFHABIDEGGBCCGIAHHHGFFBJDACBAEJDFGAGCHDFEBCCAFFAHFHBBCDIHDDBCAFGDAJFGBFJFDDGDGICCDBDJABFJAAJBBGADDAEHDEAFCHAGHBGFDCABBHBADFCDBABFIBGFCGCECACDIAHIDFBAHEEHJDEBJEABHJ"
3

"CBABBCCCABBBABCBCBAACCBBABCCACBACACACBBCCCAACBBCBCCABCCCAACBBACABAAACBCBCBCACBACCCBBBBBCCCBCBCCACABACABCBCAABABACAACBBACBCCCBBAABCCAABCCABBCCBABAABBCAAABCBABBCACACCCBCCCBBACAABBBAAACACACBBCBBCABBCBBCBCCAACBABAACACAACCBAABCACBAC.BABABCABAABCABACCBBCBBCCCBACAABAACCBABCBCBCAACCACBACCBABBBCBCBCACBABACBACACABCBCABAACBCAAABBCBCCCBBABAAABBAACCCCACBCBCCBABCBABBABCAAABBAACABCBCBBAAABBCABBBBBACABABBCCBACABCCBCAAABAAAABACAACCCCCBCCCAAABBCCCBBACACBCCACBAAABAABB.BABBCAAABCABBAABCCCAAACAAACCAABCABBCB.CBBCACBBAABCABBBCBAAACABACACCBBACCAABAACACCAAACBAAACBCCCBCAACBBACABACBABABBBBAAABCABCABCCCACBCCACABAAABBBABBABCBACBACBAACBBACBAAABBCBABCBBCCAACCAABACCCCBACBCAABACBCBCCCBA.BBACBABAACCCBABABCAABCCACCAABABACCCABCAAACCCABACCBCCCCCCCBAABBBCBCABABBBACACCBCACABBABACBBBBCBACABACBBAAABCBBBCABAABABCBBCBAACBBBACAACACCAACCACAACACBACAACCCACAACCCABCBBBABBBBABACBCCAACACBAAACCCBCCCAAACABCCCABCBAABBABCCBACABABBBAAAACCABCBBBBAAAABCCCBCBCABCCCB.CAACCCAABAAAACCBACCACCCBBACACAAB.CABAAB.CABACCACACCCBBBAABCABCBABCCCAACCCBCBBAAACCACCACACBCCBACCACAACBCBACABABBAACACBCCBCCBCCBCCABCBCCAABCABAABCCBAAAABBCBCABCCBCABBABBCAAAACCBCCCBCBBACBBACAACCBACBAAAACCBAACCAABAACCBBCBAAABACABCCAAACABCBCBBABCACBABBCCABACBCCBCAABCACAACCBBBCCBCBCAACCABBBBCCBBAAAAACACACBACBBCCCBABCAACCCAACCBACABCABABBCCABBBAACBCBACAACCABCCBBAAAAABBBCBCCBCBCCAAACCBBBAACCCBCACCBCAAACCCCAAAABCBBABBBCACACCCCBBCBCCBAABCAACBACBBABCACABABACCBACBAAACBCABBCACAACAABBACCCAABCAAABCBBACCABBCBCCAAAABBCCABBBACCBBCCCABBCABBCCBACABBCABCBAABACBAACCCABABAACACBAB.CCCBACBABBABABCBCCAAACCACACBBABACCAABABAABBCBCBABBABABBBACBCACCBCBAAAAACCCBCAACBBAACAABBABCCABBAAAACCBBCABAA.BBCBAAACCACABBAAACABCCCCBCAAAAACACCBABBCACBACCCABCCABABABCCACBCCCBBCCCACCBCCAAACBBBABCACCBAABBBAABBBAABACBBCBAABCCABCBACABACCBAABBCCABCCCABCABBAACBCCBBCBCBCCCCCBBBCAABABACCBABBBCABBCBCBCBABCBCBABCCAABABABBABAABCBBAAAAABABBACCACACBAAABBBCCBCBBABBABCCACCCACBCCBCBBAAABACABBBCCACBCCAACCCABBBCCBBABABBBCAAACCAABCCAAABBACABCAAACACABAAACACCCACCB.BBBCCAACCACABACAAACABCBBAAABCACCCAAABCBAACBAACACBCCAABCCBCCBACBCCBCCAABCCBACABCCCCBCCABBACCBCACAAAABBABBCBAABBBABCCBCCBBCCCACCCABACACAAACBCAAABCACBAAACAACAAABABBCAABCCBCBACBCBBABBBCBCAAACCCACBABAACBAABC"

Returns: "CBABBCCCABBBABCBCBAACCBBABCCACBACACACBBCCCAACBBCBCCABCCCAACBBACABAAACBCBCBCACBACCCBBBBBCCCBCBCCACABACABCBCAABABACAACBBACBCCCBBAABCCAABCCABBCCBABAABBCAAABCBABBCACACCCBCCCBBACAABBBAAACACACBBCBBCABBCBBCBCCAACBABAACACAACCBAABCACBACABABABCABAABCABACCBBCBBCCCBACAABAACCBABCBCBCAACCACBACCBABBBCBCBCACBABACBACACABCBCABAACBCAAABBCBCCCBBABAAABBAACCCCACBCBCCBABCBABBABCAAABBAACABCBCBBAAABBCABBBBBACABABBCCBACABCCBCAAABAAAABACAACCCCCBCCCAAABBCCCBBACACBCCACBAAABAABBABABBCAAABCABBAABCCCAAACAAACCAABCABBCBACBBCACBBAABCABBBCBAAACABACACCBBACCAABAACACCAAACBAAACBCCCBCAACBBACABACBABABBBBAAABCABCABCCCACBCCACABAAABBBABBABCBACBACBAACBBACBAAABBCBABCBBCCAACCAABACCCCBACBCAABACBCBCCCBACBBACBABAACCCBABABCAABCCACCAABABACCCABCAAACCCABACCBCCCCCCCBAABBBCBCABABBBACACCBCACABBABACBBBBCBACABACBBAAABCBBBCABAABABCBBCBAACBBBACAACACCAACCACAACACBACAACCCACAACCCABCBBBABBBBABACBCCAACACBAAACCCBCCCAAACABCCCABCBAABBABCCBACABABBBAAAACCABCBBBBAAAABCCCBCBCABCCCBACAACCCAABAAAACCBACCACCCBBACACAABACABAABACABACCACACCCBBBAABCABCBABCCCAACCCBCBBAAACCACCACACBCCBACCACAACBCBACABABBAACACBCCBCCBCCBCCABCBCCAABCABAABCCBAAAABBCBCABCCBCABBABBCAAAACCBCCCBCBBACBBACAACCBACBAAAACCBAACCAABAACCBBCBAAABACABCCAAACABCBCBBABCACBABBCCABACBCCBCAABCACAACCBBBCCBCBCAACCABBBBCCBBAAAAACACACBACBBCCCBABCAACCCAACCBACABCABABBCCABBBAACBCBACAACCABCCBBAAAAABBBCBCCBCBCCAAACCBBBAACCCBCACCBCAAACCCCAAAABCBBABBBCACACCCCBBCBCCBAABCAACBACBBABCACABABACCBACBAAACBCABBCACAACAABBACCCAABCAAABCBBACCABBCBCCAAAABBCCABBBACCBBCCCABBCABBCCBACABBCABCBAABACBAACCCABABAACACBABACCCBACBABBABABCBCCAAACCACACBBABACCAABABAABBCBCBABBABABBBACBCACCBCBAAAAACCCBCAACBBAACAABBABCCABBAAAACCBBCABAACBBCBAAACCACABBAAACABCCCCBCAAAAACACCBABBCACBACCCABCCABABABCCACBCCCBBCCCACCBCCAAACBBBABCACCBAABBBAABBBAABACBBCBAABCCABCBACABACCBAABBCCABCCCABCABBAACBCCBBCBCBCCCCCBBBCAABABACCBABBBCABBCBCBCBABCBCBABCCAABABABBABAABCBBAAAAABABBACCACACBAAABBBCCBCBBABBABCCACCCACBCCBCBBAAABACABBBCCACBCCAACCCABBBCCBBABABBBCAAACCAABCCAAABBACABCAAACACABAAACACCCACCBABBBCCAACCACABACAAACABCBBAAABCACCCAAABCBAACBAACACBCCAABCCBCCBACBCCBCCAABCCBACABCCCCBCCABBACCBCACAAAABBABBCBAABBBABCCBCCBBCCCACCCABACACAAACBCAAABCACBAAACAACAAABABBCAABCCBCBACBCBBABBBCBCAAACCCACBABAACBAABC"
12

"A.C.HLD.F..A.I.EE.B.DG.GIJIG..E.AGGCIFDHADEH.EL.I.BDD.CK..LCDBAL.JKBFL.FIG.H..B.EAKIDKEIEDCEKK.ABC.DLA.LA.LEL..KGK..FKGB.IK..CAFHFGIEFAC.JL..K.K.CHD..CHJC.ABD.GBCGFBD.JJJBHLCCFJ.A.I.JL.ABBHEJGED..DKIFIJG.DFDILBCHIGDI..J..JAK.HG.EKD.F...F.AEE.IDLJ..EE.LB.F.F..BI.BGJFKBI..FI.A..BG...DJIK.LKKAKIHEBJBBAFGC..JJHE..J.IAJHDD.CB.L.AJ.ELK.E.HLIH..FJ.D.CCE.IHKEDG.FH..AFKGBHIJAE..I...F...J..CLD.AGALHJA.KKEDL.E..AKBLLLHDEHHH.GJBDLBEBCH.LJJFH.IBGK..K..BB.FG.LKJB.BBADL.HBF.G.LG..HHH.AAJGE.B..FJH.LBAHF.J.E.DA..HG.HGKDFDG.JD.JJHJFJH.FDJ.B.E..K..GLAHCF.GDD.HK.KBBK.IBLKIFFE.D..AJ.L.GIDHCEL..HI..ICBJCBJAA..DAEK.H.AEAK...FAGAJJ.JJ.EI...GKA.EHFB.JJ..DCLB..G..GGIEEKA.GF.HEE.K.GL..CJ.IEFLF..AIIDDF.BHIA.DF.G.F.IHL.JCC.ECC..JIJ..JFKD....JFLHACFL.EIG.IE.KCLBGK.J.I.BCGHL..IECK..D.DJEAB..ECJG.II.JBE.A.J.AJ..JHLICHGKG.KC.BCJA.DBB.I.H.B.BIFBA..GFFBDG.FC.HCC.HBBA....F..LHE.E..CAA.DEJA.H.AHHBGG.EJLEJ.C.DA..EL.HHILCIKEGCHD..C.B..I.....LG.F.LIH.ELDGLHBAFE.BG.JKJFCJEHII.E.....JAJ.IHEA.I.AB.FIHHGHCK.CDA.JKIAB.CKEHFCJ.FAIDEGD.KLH.DI.E.C.JJ.H.FLDAIADLF.AJ.I.F.A.BJD...IIJDJFEK..FLAJKGL....FI..AK.EAA.AJA..DDF.KI.L..BIGGDBBEKFA.CLGBD.HCCA..DA.CHL.G.C.GLLLL.GKHIE.HFLH.BBKLABAHFB..AJAHAEG.IGA....FBBG..DLAIIBK.F...F.LK.I..D...DB..DBKAEAAGDL..FIJHF.CF.EEJG.IEGKF.JDBLDJ.FAJCJGBBJKG.I.JAGGLLCHEHB.GFDKLKAF.G.LCEJ.GH.J.F.BBIEBF.LCBJALBK.LD..IJ.E.G..BJKBGLAKLDEF.JA.HJFE.CJJJ.CGA.FJC..JDGLDCH.IFHD.FA.B.GEDEAAAAFDH.DC.FLEEAB.JL.I.KBEDLD.DBD.LCBL.IJ..D..ELGGE.I.EJA...JAFJ.KB.B.HGB..HHAA.GIAGI.GGHADGB.KF.EL..AG..BC.AI.A..E....I.DEIK..A.BFG..GAG..KH.B.F....A.CCC.HD.....B..I..JHKJ.BCK.FBJID.FC.FLIH.CAJDE.KLF..JHKLBFLHK..FALB..AF.GBDKKE..AKJAEACBBB....JKKIF.EC.IF.L....KJB..AHJJHIH.F.E...KGIKBBIEKLBEGE.GCG.HFK.C.A....AG.ACIJHJ..IHD.E..FB.DH.AD..BLKALEL.D.J.GGAK.IL.JAAFE.GDGDBKK.KAFE.A.EEFJ.HL.K.CJHB.CKAIKFFC..JK..E..B...FI.AGCK.G.JGG.FEK.DIHE.AKBD.DH..IHAB..G.AGCC.J...H.IE.FLG..JJ.FA.A.J..F.FD.GFCJIH.C.DC.ACLIBIICJEKGB.G...H.LEC...ILB.F.HLKALAGBJJ...GD.J.GE.J.GD.FGK.LC.E..JA.DKECD.CAEEHAKDLDCB.C.FI..HIF.BIF.AHF..LIB.ALDDAJGE...KFL.FIKCEHJ.BA.A.C.JA.DLBHJ.AI..AL...IGBLDDA..F.CJA.DCKJLG.FKLILIK..ILLGHL.BI.FB.AAFLAA.D.J.FG.CEC.D.J.JACJH.HBJLLDAC.LHJ.GBF...G.EAI.LF.B....E.B.FC..F.KDGCK.DA.FE.HI.FIBC...GKEGLDEF..IJ.BK.BF..KILGAFC.HAEHADDGJ..DLFHJBKC.CFC.DJ.DIBLC.J.IKAICCCBEH..B..I..BG...LJH...DGEI.JBGKLDAGG.A.DABJCIBCLDJCFAIKEC.HC.IG.BI.C.CHDAI.FD.B.G..C..CAFFHJCKILAAIBKDADLKKKAJJCBADHJ.H.CHF.DLHH.K..KDKLBI.JJ.KHDGLCCFDH"

Returns: "ABCAHLDAFABABIAEEABADGAGIJIGABEBAGGCIFDHADEHAELAIABDDACKABLCDBALAJKBFLAFIGAHACBAEAKIDKEIEDCEKKBABCADLABLABLELABKGKABFKGBAIKABCAFHFGIEFACAJLABKAKACHDABCHJCBABDAGBCGFBDAJJJBHLCCFJBABIAJLBABBHEJGEDABDKIFIJGADFDILBCHIGDIABJABJAKAHGAEKDAFABAFBAEEAIDLJABEEALBAFAFACBIABGJFKBIABFIBABABGABADJIKALKKAKIHEBJBBAFGCABJJHEABJAIAJHDDACBALBAJAELKAEAHLIHABFJADACCEAIHKEDGAFHABAFKGBHIJAEABIABAFABAJABCLDBAGALHJABKKEDLAEABAKBLLLHDEHHHAGJBDLBEBCHALJJFHAIBGKABKACBBAFGALKJBABBADLAHBFAGALGABHHHBAAJGEABABFJHALBAHFAJAEADABAHGAHGKDFDGAJDAJJHJFJHAFDJABAEABKABGLAHCFAGDDAHKAKBBKAIBLKIFFEADABAJALAGIDHCELABHIABICBJCBJAABADAEKAHBAEAKABAFAGAJJAJJAEIABAGKABEHFBAJJABDCLBABGABGGIEEKABGFAHEEAKAGLABCJAIEFLFABAIIDDFABHIABDFAGAFAIHLAJCCAECCABJIJABJFKDABABJFLHACFLAEIGAIEAKCLBGKAJAIABCGHLABIECKABDADJEABABECJGAIIAJBEBABJBAJABJHLICHGKGAKCABCJABDBBAIAHABABIFBABAGFFBDGAFCAHCCAHBBABABAFABLHEAEABCAABDEJABHBAHHBGGAEJLEJACADABAELAHHILCIKEGCHDABCABABIABABALGAFALIHAELDGLHBAFEABGAJKJFCJEHIIAEABABAJAJAIHEABIBABAFIHHGHCKACDABJKIABACKEHFCJAFAIDEGDAKLHADIAEACAJJAHAFLDAIADLFBAJAIAFBACBJDABAIIJDJFEKABFLAJKGLABABFIABAKAEAABAJABADDFAKIALACBIGGDBBEKFABCLGBDAHCCABADABCHLAGACAGLLLLAGKHIEAHFLHABBKLABAHFBABAJAHAEGAIGABABAFBBGABDLAIIBKAFABAFALKAIABDABADBABDBKAEAAGDLABFIJHFACFAEEJGAIEGKFAJDBLDJAFAJCJGBBJKGAIAJAGGLLCHEHBAGFDKLKAFAGALCEJAGHAJAFABBIEBFALCBJALBKALDABIJAEAGACBJKBGLAKLDEFAJABHJFEACJJJACGABFJCABJDGLDCHAIFHDAFACBAGEDEAAAAFDHADCAFLEEABAJLAIAKBEDLDADBDALCBLAIJABDABELGGEAIAEJABABJAFJAKBABAHGBABHHAABGIAGIAGGHADGBAKFAELABAGACBCBAIBABAEABABIADEIKABACBFGABGAGABKHABAFABABABCCCAHDABABABABIABJHKJABCKAFBJIDAFCAFLIHACAJDEAKLFABJHKLBFLHKABFALBABAFAGBDKKEABAKJAEACBBBABABJKKIFAECAIFALABABKJBABAHJJHIHAFAEABAKGIKBBIEKLBEGEAGCGAHFKACBABABCAGBACIJHJABIHDAEABFBADHBADACBLKALELADAJAGGAKAILAJAAFEAGDGDBKKAKAFEBABEEFJAHLAKACJHBACKAIKFFCABJKABEACBABAFIBAGCKAGAJGGAFEKADIHEBAKBDADHABIHABABGBAGCCAJABAHAIEAFLGABJJAFABABJABFAFDAGFCJIHACADCBACLIBIICJEKGBAGABAHALECABAILBAFAHLKALAGBJJABAGDAJAGEAJAGDAFGKALCAEABJABDKECDACAEEHAKDLDCBACAFIABHIFABIFBAHFABLIBCALDDAJGEABAKFLAFIKCEHJABABABCAJABDLBHJBAIABALABAIGBLDDABAFACJABDCKJLGAFKLILIKABILLGHLABIAFBCAAFLAABDAJAFGACECADAJAJACJHAHBJLLDACALHJAGBFABAGAEAIALFABABABEABAFCABFAKDGCKADABFEAHIAFIBCABAGKEGLDEFABIJABKABFABKILGAFCAHAEHADDGJABDLFHJBKCACFCADJADIBLCAJAIKAICCCBEHACBABIACBGABALJHABADGEIAJBGKLDAGGBABDABJCIBCLDJCFAIKECAHCAIGABIACACHDAIAFDABAGABCABCAFFHJCKILAAIBKDADLKKKAJJCBADHJAHACHFADLHHAKABKDKLBIAJJAKHDGLCCFDH"
25

"J.VJBEDO.BIJIV.BGNMN..L.GHO.Y.QGR.XD.K..X..CQEE.UCXEUBVAAJVJNYSSIA.VSS.UEQFYWSIH.KYVR.AAH.YESEK...MI.AEXW.WWY..LUYLPI.MQOQSXM.BJTOY.I.U.OQTPUC.KGG.ONLTE.PUI.VFHXRFHT.HAYOED.O.EF.AQCX.JXHQH.DXKJB..Q..CEQS.NPTEHV.X..SLBQWFAKWRCVQIJIJPY.CG...W..MC.RUL.IA.XY.HTLODSCTVPDVGWTUGSHSOUVM.UBR..K..JWO..V.RNG.IVHBX..MQPYTR.EUOMQ.CAXBP.NX..PWD.KGCFB.HLGUUHY.SQKX.BRBQ.BLVK..U.GCL.NJDUJ.N..YGHQVFEEEKYIWCYBM.BH.M.UKQCF.BXUWQXJFOFEYHJYLSI.D.Q.AQTNJUUMFATAXOK.S.XQR.GHKFK.JL.P..CGLFUPXOJN..HEEMTTVR.GS.CHE.F.VHFHJOPWPFYTEW.XFUWWIXU.S..QTUI.PBQVP.OCQI.SQUXIT.MYLPMF.G.SRNA.HWWDGPC.MPA.NMT.BIE.UKIB.UAXAN.PBSIENKCA.UDDG.JC.HH.B.CMFB.L.XIRQX.P.PMM..ION.EAOEB.WAR.N.DR.Y.X..CEPIKM..REMS..KBEFYEK.SQJHVUU..T..KCIS.JATODVVUECWXPYOODAEBWKSKSRL.C...VILW.XUVHDCGF.K.TBBOLC.MTPFW..C.OWQ.WFSFDWU..JEV.FXWORWBE..VYYMTGDVPKRB.S.UWHBOGGGILA.B...Q.WTUFKLFTYPQGF.SYEFGNQ.UWDFAOF.SDQ...R.VXXA..M..EL.W.PJIIYQIP.SVH......A.CBQX..IWVXCH.JHYM.CLE....QMJ.C.TC.PD.UXVC.L.F...UKPF.DDTFE.O.GIUVV.TM.NU.XV.BCHN.KAQOFJ.DXECNJEI.P..GRTVYDHGJNYET..D.OJ.EHKCSI.EMXBLF.CJE...IR.IWKEI.GOQ.YIHD.N.MYTMRH.BP.LL.MHUEQMMCQGY..XD.P.XACCIKT.D.N.MRFHLAWA.KBMMYROO.LXKWT.R.H.UAFHHK.R.SDB..MH.WJEWMDOUS..SG.L....F.INDA.FQUHYGNDTXNUHO.OFFAM..QXLO.AU.XL..PENL.XTXUWYLAT.RRNKLNMK..NQH.QL.UYLMO.SVGTXLK.GWYTW.K..QE.Q.UAI.QW.C.A.HKGV.NSLCHGCODKQIP.D..KET.LXT.AD.VM.E.KP..PYH..OXKJ.NK.PFQGKHTTHRNOL.JDF.IGJYB.E..TDU.F..WVV..STEWB.YF.VA.AVCPGEBFLW..RHDMO..WTUPUJNQYLPIE.TOBMJBVFV..WTYTWQ.HI.QUTEJ.WS..LKI.Q.I.AVXKUWDGAGMJNVMCCOQL...LNAVYLSKO....HGWMMAQ.NROUKPV.CEUQCOPH.R.QR.LKRM.HWODAQLI.CMR.S.I.E.XSCW.V.DTUWTKYQOHG.P.FSQDBYJ...IWKENMJ.E.O.T.PQHAO..I...YGIRWKSTCY.YEQTR.KCX.V.RVYMEAWYDQQNEOTU.C.DXQG.V.OAWBM.TTIXS.VT.R.HWCPRJSSSJFVLKYFPGQTOUHP..WONSXQNXMCTWHE.KAWWK..GHVGE.LJXTTSKCO.MOTFEJPGK..BNMRRJ.JS.K..WITFDPJV..XO.PHS.AYAE.W.KX..YNPHIC.BP.FAESOX..EYBX.J.PTBAMSCTBO.CAGC..VJVHLE.JX.HID.FBDNDFP..XSIFRO.IS.KO..EM..J.GJEHOG.N.WJGOUFPGVYP.RPBIIOUU.QJJ..FYRQGYVOCIOPFFLBUEIOEQQY..HCE.F.T.WD.TOSHFM.JQVFTBD.J.WS.QT..JRWXO..W.RAN.Y.U.P.WCJNCTWBY.UG.HXJWRIKLPOAWHO.OGBJCAVFHGQ..F.GQK.TG..LPYGG.JLGKEHXK..IT.H.YOYSSDCWBT.QY.XFN.FODQUNVJDXECCVC.XF....TGANIUN.I.VKFHEFXAFAEDOSKHV.IP.GB.MR.SD..LONV.Y.YWVIPNGTVDD.N.AJSDBBK.VU....K.CHQRSJYX.YLYJFBV.LXSC.W.E.CYOLYPYVALGEKIN.O.UBSG.KFB.C.GE.GKF.PFAKAKJXY.U.G.SWIKNK.LNL.TIVO.XNOVR...PUBSDLS..B.FTS.XH..KJH.XB.EOIYLILS.VM.RG.AWJQS.NDAX.ARHYLLV.I.N...CK..IOXVC.CG.B..SEPWXRUN.DIUC.G..O...QJOAEVWT.......RSPNVKRK.HOSCAXKOOGALGKN.FIPHUPM.MD.S.XOQS.VKMTFB.EBLHRYTBYWW.CBP.JOUFTCL.WH.TA.I.KT.DIR.R.TFG.BRWXCGRL.CEJEF.P.UTR"

Returns: "JAVJBEDOABIJIVABGNMNABLAGHOAYAQGRAXDAKABXABCQEEAUCXEUBVAAJVJNYSSIABVSSAUEQFYWSIHAKYVRBAAHAYESEKABAMIBAEXWAWWYABLUYLPIAMQOQSXMABJTOYAIAUAOQTPUCAKGGAONLTEAPUIAVFHXRFHTAHAYOEDAOAEFBAQCXAJXHQHADXKJBABQABCEQSANPTEHVAXABSLBQWFAKWRCVQIJIJPYACGABAWABMCARULAIABXYAHTLODSCTVPDVGWTUGSHSOUVMAUBRABKABJWOABVARNGAIVHBXABMQPYTRAEUOMQACAXBPANXABPWDAKGCFBAHLGUUHYASQKXABRBQABLVKABUAGCLANJDUJANABYGHQVFEEEKYIWCYBMABHAMAUKQCFABXUWQXJFOFEYHJYLSIADAQBAQTNJUUMFATAXOKASAXQRAGHKFKAJLAPABCGLFUPXOJNABHEEMTTVRAGSACHEAFAVHFHJOPWPFYTEWAXFUWWIXUASABQTUIAPBQVPAOCQIASQUXITAMYLPMFAGASRNABHWWDGPCAMPABNMTABIEAUKIBAUAXANAPBSIENKCABUDDGAJCAHHABACMFBALAXIRQXAPAPMMABIONAEAOEBAWARANADRAYAXABCEPIKMABREMSABKBEFYEKASQJHVUUABTABKCISAJATODVVUECWXPYOODAEBWKSKSRLACABAVILWAXUVHDCGFAKATBBOLCAMTPFWABCAOWQAWFSFDWUABJEVAFXWORWBEABVYYMTGDVPKRBASAUWHBOGGGILACBABAQAWTUFKLFTYPQGFASYEFGNQAUWDFAOFASDQABARAVXXABAMABELAWAPJIIYQIPASVHABABABABCBQXABIWVXCHAJHYMACLEABABQMJACATCAPDAUXVCALAFABAUKPFADDTFEAOAGIUVVATMANUAXVABCHNAKAQOFJADXECNJEIAPABGRTVYDHGJNYETABDAOJAEHKCSIAEMXBLFACJEABAIRAIWKEIAGOQAYIHDANAMYTMRHABPALLAMHUEQMMCQGYABXDAPAXACCIKTADANAMRFHLAWABKBMMYROOALXKWTARAHAUAFHHKARASDBABMHAWJEWMDOUSABSGALABABFAINDABFQUHYGNDTXNUHOAOFFAMABQXLOBAUAXLABPENLAXTXUWYLATARRNKLNMKABNQHAQLAUYLMOASVGTXLKAGWYTWAKABQEAQAUAIAQWACBABHKGVANSLCHGCODKQIPADABKETALXTBADAVMAEAKPABPYHABOXKJANKAPFQGKHTTHRNOLAJDFAIGJYBAEABTDUAFABWVVABSTEWBAYFAVABAVCPGEBFLWABRHDMOABWTUPUJNQYLPIEATOBMJBVFVABWTYTWQAHIAQUTEJAWSABLKIAQAIBAVXKUWDGAGMJNVMCCOQLABALNAVYLSKOABABHGWMMAQANROUKPVACEUQCOPHARAQRALKRMAHWODAQLIACMRASAIAEAXSCWAVADTUWTKYQOHGAPAFSQDBYJABAIWKENMJAEAOATAPQHAOABIABAYGIRWKSTCYAYEQTRAKCXAVARVYMEAWYDQQNEOTUACADXQGAVAOAWBMATTIXSAVTARAHWCPRJSSSJFVLKYFPGQTOUHPABWONSXQNXMCTWHEAKAWWKABGHVGEALJXTTSKCOAMOTFEJPGKACBNMRRJAJSAKABWITFDPJVABXOAPHSBAYAEAWAKXABYNPHICABPAFAESOXABEYBXAJAPTBAMSCTBOACAGCABVJVHLEAJXAHIDAFBDNDFPABXSIFROAISAKOABEMABJAGJEHOGANAWJGOUFPGVYPARPBIIOUUAQJJABFYRQGYVOCIOPFFLBUEIOEQQYABHCEAFATAWDATOSHFMAJQVFTBDAJAWSAQTABJRWXOABWARANAYAUAPAWCJNCTWBYAUGAHXJWRIKLPOAWHOAOGBJCAVFHGQABFAGQKATGABLPYGGAJLGKEHXKABITAHAYOYSSDCWBTAQYAXFNAFODQUNVJDXECCVCAXFABABTGANIUNAIAVKFHEFXAFAEDOSKHVAIPAGBAMRASDABLONVAYAYWVIPNGTVDDANBAJSDBBKAVUABABKACHQRSJYXAYLYJFBVALXSCAWAEACYOLYPYVALGEKINAOAUBSGAKFBACAGEAGKFAPFAKAKJXYAUAGASWIKNKALNLATIVOAXNOVRABAPUBSDLSACBAFTSAXHABKJHAXBAEOIYLILSAVMARGBAWJQSANDAXBARHYLLVAIANABACKABIOXVCACGABABSEPWXRUNADIUCAGABOABAQJOAEVWTABABABARSPNVKRKAHOSCAXKOOGALGKNAFIPHUPMAMDASAXOQSAVKMTFBAEBLHRYTBYWWACBPAJOUFTCLAWHATABIAKTADIRARATFGABRWXCGRLACEJEFAPAUTR"
3

"...CC.............A.A....A.B...A..B.C...CCC.C...A..B......CA.A..B...A.A.A....CCA.............A...BB...B.CC...A...BA..CB.B.......C.BB..B.A.........CB..........................C..B.........C..C...C...C............C.B.CBC..B...................B.................AB.C....C..........C...C.........CB..C..AA...BB.A.......A..AA...A..C..A...C......B.....ABB.C.....C.....AA...CB...C.........B..BA........C......C.................C.......B.....C.....AACA.........A................A.C.......CBA..B.C.....B..C.BB...A....B...CBAAAB..................A.A.B.C......B.....C.B...B..C......C......AA.....AC...A.....B..........C..AA...A....CC.....BB...C.A..C.A.....CC......CC..CB.BCC.B.CB......C.B.B.....C...CAA....B....AB....C.A.........C..................A.C......C.C.....................B.B..A..AA.........BB.BCC.C.....C.....B......A....A......CB....A...BB.B.C..AA...A..AB....B.......A...A..B.C.....A........C..........A....B.......B...A....B.A.C.....B...........C...C.B..AB..B........BA...........C............C..........C.B.....C..C....C...BBC.C................C...CC.C....C.B.BAC..AC....B....AA..A.......C.......A.......C.B.....C........C...A.C.A......A...B.ABA...B..B.....B......A.....C...C.....B.A.....B.BA......A.B...............B..A..B.....A..B....C.B.CC...C..C..........A.CCA.A.................ACA..A.......A..AA.......BA....A...AA.C....A..BC..A.....B...A..........B....B.........B......A...BACC.....B.A..B........C......B...A.CA...A....................CB.AC.......A........B....B.C...C.....B..B.C....B.B....................A.....B................A.A....C.B..B.........A....B.B..C.......A..A...A....B.BB..B...BB.B....AC.B......B..C............CB..A......CB.C.....A.....B...C.ACB........B.....B...CC.............A.C..A..AC..........A......C..........B..BA.........B....A.B.BB....C...........B...............AC...C.....B.B..................B....B...C............A..A...C..........C...............BC...B.....BB.CA..A..C..A.....B......C.A.........C...A.BC......C..............C....BC.............B........AB.......A.....B.........A....A.CA..........A.C...C.....B...........A.B.A..........A..C...C.C...............BA.C....B..A..AA............C....A....B......A...........C.....C...A..BA.A..................B..A......A........BC...C...A............AC..C.B.C................C.............CB.A......B.BC......C..CB...A.......B.AA.......BC.A.....CAB...........AC.....B.....AC............A...A.................BA....C...C...C.....C.........AAB.A...C..CAB.C.....A....C"

Returns: "ABACCABABABABABABCABABABCACBABCABABACABACCCACABCABABABABABCABABABABCABABABABACCABABABABABABABABACBBABABACCABCABACBABACBABABABABACABBACBCABABABABABCBABABABABABABABABABABABABABCACBABABABABACABCABACABACABABABABABABCABACBCACBABABABABABABABABABABABABABABABABABABCABACABABCABABABABABCABACABABABABACBABCABAABACBBCABABABABABCAABABABACABABABCABABACBABABCABBACABABACABABCAABABCBABACABABABABABACBABABABABACABABABCABABABABABABABABACABABABABABABACABABCAACABABABABABABABABABABABABABCABCABABABACBABABACABABABABCABBABCABABABABACBAAABABABABABABABABABABABACBACABABACBABABACABABABABCABABABCABABABAABABABACABCABABACBABABABABABCABAABABABABACCABABABBABACBABACBABABABCCABABABCCABCBABCCABACBABABABCABABABABACABACAABABABABABABABABCBABABABABABCABABABABABABABABABABCABABABCACABABABABABABABABABABABABABABCAABABABABACBBABCCACABABACABABABABABABABABCABABABACBABABABACBBABACABAABABABCABABACBABABABCABABABABACABABCABABABABACABABABABABABABABABABABABABCABABABCABCABABABABABABABABACABACABABABACBABABABACBABABABABABABCABABABABABABCABABABABABCABABABACABCABABCABABBCACABABABABABABABABCABACCACABABCABABACABACABACBABABAABCABABABABCABABABCABABABABCABABABACABABABABCABCABCBABABABCABACBCABABACBACBABABABABABABABABABCABACABABABCABABACBABABABABCACBABABABABABABABABABABABABABCABABABABCABACCABACABCABABABABABABCCABABABABABABABABABABACABCABABABABABCAABABABACBABABCABABAABCABABABABCABABABACBABCABABABABABABABACBABABABABABABABABABACBACCABABABCABABABABABABCABABACBABCABCABABABABABABABABABABABABACBCACABABABCABABABABABABACBACABACABABABACBACABACBABABABABABABABABABABABABABACBABABABABABABABABABABABACABACBABABABABCABABABABABCABABABCABCABABABABABABBACBABABBABABABACABABABACBABCABABABABABABCBABABABABACBACABABCABABACBABACBACBABABABACBABABABABACCABABABABABABCABCABABCACABABABABABABABABACABABABABACBACBABABABABACBABABACBABBABABCABABABABABABABABABABABABABCACABACABABABABABABABABABABABABACBABACBABACABABABABABABABCABABCABABABABABCABABABABABABABABCABABABABABBACABCABACABABABACBABABABCBABABABABABCABCACBCABABABCABABABABABABABCABACBCABABABABABABABABABABABABABABABCABABACBABABABABCABABCABCABABABABABCABCABACABABABABABABABABCACBCABABABABABCABACABACACABABABABABABABABABCABACBABABCAABABABABABABACABABABABABABABABABABABABABABCABABACABCABABABABABABABABABABABABABABABABABCABABABABABCABACABCABABABABABABCACABCABACABABABABABABABABCABABABABABABACBCABABABABABCABABABCABCBABCABABABACBCAABABABACBCBABABABCABABABABABABCACABABABABABCACABABABABABABABABABABABABABABABABACBABABACABACABACABABACABABABABCAABCABABCABCABACABABCABABAC"
3

"........A....C......B..............AB.........................................B..........B.B.............................C...C....................A..............A...B......B............B.......A..A...C...............CB....A........B................B.............C....C..............A...........C...........B.........................C.........B.B............AC.B.....AB.....B........A.....B......C..................................C..............B....................C................B.C...A..AC.B................................A.A...A..............B..A..BA..B........C....C.C.B......B.....A....C.....B.A...........B...A...........B...B..A.CB.....C..C...............C.B.B..............B.........C.............A......BB........A..................A....AC.....B...................................................................AC......C...A...B......C..A.........B....A....A....A....CAC...................................C..............C.................C.A...................A..C.......C.................A..........A......C.......B..................C..CB.C...A.........B..C.....B...A..A......B....C...C....C....C.....BAB.......B.B...........C..AB..........................A..A..........A.C....A...........B.BA........C......B...A..............A........B.........C...A...C...........B........C.................C........B......C.........................A...........B....C..........A..................B.........................A.A...A.....A.A...C...........C........C......................B....C..................CB.........................C...........AB......AA...C........................C.................A.A..B............A.....C..............................B...A.......C..........A..AB...B..C............A.C............BA...A..............................A..........C..................................CC..C.A......A.C.....B..C....C..C........B..........B...B.....C.........B..A..B...............C.......C..........C.......B...B......B...........B....ABB..B..BC.A..........C................C...B............C...A...........B................B....C......"

Returns: "ABABABABABABACABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABACABACABABABABABABABABABABABABABABABABABCABACBABABACBABABABABABACBABABABCABCABABCABABABABABABABACBABABABABABABABABABABABABABABACBABABABABABABACABABCABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABACABABABCABABABABABABABABABABACBABABABCABABABABABABABABABABABABABABABABABCABABABABABABACBABABABABABABABABABABCABABABABABABABACBACABCABCACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABCACABABABACBABABCABABACABABABCABABABABABACBABCABABABABABACBABABABABCBABABACABCABABABABABABABACABABABABABABABABACBABABABABACABABABABABABCABABABABBABABABABABABABABABABABABABCABABCACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCACABABABCABCABACBABABABCABABABABABACBABABABABCABABCABABACACABABABABABABABABABABABABABABABABABACABABABABABABABCABABABABABABABABACBABABABABABABABABABABABACABABABACABABABABABABABABCABABABABABCABABABACABABABABABABABABABABABABABCABCBACABCABABABABACBABCABABABABCABCABABABABABABCABACABABCABABCABABABABABABABABABABABABABABACABABABABABABABABABABABABABABABABCABABABABABCABCABABABABABABABACBABABABABABACABABACBABCABABABABABABABCABABABABABABABABABACABCABABCABABABABABABABABABABCABABABABABABABABACABABABACBABABABCABABABABABABABABABABABABCABABABABABACBABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABCABABABABABACABABABABCABABABABABABABABABABACBABABCABABABABABABABABABCBABABABABABABABABABABABABACABABABABABCABABABABAABABCABABABABABABABABABABABABCABABABABABABABABCABABABABABABABABABABABABCABABABABABABABABABABABABABABACBABCABABABABCABABABABABABCABABABABCABABABABABABABCABABABABABACBABABABABABABABABABABABABABABABABABCABABABABABACABABABABABABABABABABABABABABABABABCCABCBABABABCABCABABABABCABABCABCABABABACBABABABABACBABABABABACABABABABABABABABABABABABABABABACABABABACABABABABABCABABABABABABABABACBABABABABABABABABABBACBACBCBABABABABABACABABABABABABABABCABABABABABABABABCABCABABABABABACBABABABABABABABACBABABCABABAB"
17

".EODLQC.DQELDPKNGQLNGCGOLDANLOQJELDJCMDECEII.AJ.IIKIDPBMEF.QONED.CBKHCNKF..BCNMED.HGEI.QEHHKDJDLBPDELHAHBEIEMHGNHDAJGFAGEDJG.CQLCJNIHINHMPMHJMIQGKQJ.IOAAKEPPAFGCQPKMGJAMLDOMOQFDNQCNPFC.INBM.IEGE.BLHKHHOMAOIAANKHPKOBDIMJI.PKMFJHNKMNOOGP.MECKHQJBJGGOEKGQ.A.NLNDOLNQLGHBBPNKDGHDIDEJLFA.NIQEFCQNCQ.JPKJPF.NLEIDLIQQCJJE.PMPCALELGOE.PKPHLAIEJBGKA.OQQNEAOJGBO.JBEC.LEBKD.HHBEANHP.IGBDGEBBCBAOQGGIGDMKKLAHHBBJPGHMLNBLPGBCOQE.FGCJ.IDMQQNHLQL.BGDCOCGACLPNIFOK.AAGMDJMAEIBHFDPCHBNGGIOCLFJKIIFIALHDLBPGJLJMLJNGQOG.QK.CHPFDDCFIGIDGIHA.CPOGK.LOJKQEQKNIACHINQFMANF..NKHPFEQKQCJQFL.HQDEJJP.ABGDLGMNMMNO.JDLPMCOOEIO.PAFFCNQ.CKKNDKGJJMGCLIGBEDICBKHHEMCINOFGMDFMQBH.ACKFJL.NJMGJFMAEENMHLMDIMI.QDALHNJOOCJJIKKPIDCLABAGHJJJODMQKBPBN.PDIC.HDKEGNMHHLHDK.BOIBHM.KHNLOGN.DHICJHPPFANDLQMLAMGJGKLK.E..GNJ.DAOQJDCLPDEENE..KBLADJGJHHEHLPKOKILCPHQHDE.QQKHGFAABQ.EJGJFKDOJIPLPDMDOKEAPEBFHDPNF.HH.J.KMJLOEBLPMHFGLFONAOEBOBBBJOAIHCNKNINFQJB.EGFEMIGD.EGBDK.CGKDLPPAGDDNHLEHOBC.FGMIJ..KFHKCHHLLEQDPEE.DGPOIE.BOOHPGBFK.QBAKBOKKL.KKNEFLIHDQGPHHFHQLNFANMFDNBJPPCJMFC.MBAHGLKABOE.LHAHBPAAFM.F.MEQHNEH.FGHLAQE.QABOQDDLKBG.JBG.IIGCBQCMPJPDFMKDAEHG.AOMDIHIMODIIFDOBIHQ.AIIG.JKQOGLCCEIJCGDEMBA.JINLLJQHKCEFJCFFEDH.EN.KNLAOCPOQ.FJPPOBLFOK.OGMPAMK.LBBQ.QQEFGCDJDQ.BOIJMAOKMKNQKQGILQCDNLNAHDCHIB.DNQB.AD.AKCEADHHBDADIHBP.F.IMCKDBJB..BMI.DOBCNNFQAKCDJLBQDDPQHDJKBPKJQDKJKOQJPQGDAGQN.B.KLBNN.IGQOGHECCEHC.OABBIFNBCPNOA.JEEILDCJODFBQHKF.KALGQFG.GMFBPH.JCF.P.IBH.PPELE.HLHALHACGGAD.OAELGGQOOLDCALFOPLHBDPP.GHPLPEKONOQMIEHKLNCHIQCCAHGNEEICFGFOPDMACKGBD.KFDKJ.PQHAPEJGEIDFOJIMO.CLAQCKAPGPJGOBKBHK.N.HKNCJEKDQEKQBPCNBDL.Q.A.BQMHPC.COP.BLKAFJELPCQJNKH.GEEBQPFCIJMIHJAIJOKQJIFOLLNOMELJBNGCAAOKGBO.MELJOQHQIFBQHPLANDDLOPDJFCHQNKGEOFJMNBAAHAQDCBGLOALNFPDOLLCPOBEFMOGPGNNOFJKQP.NFGP.BQMEI.QJFQLEDLGEIN.AAALJBELNGI.EHQKPKPAA.PAKAAOOGLMHH.JJGKMBAQMPOL.FBGJB.NKEF.GFODICGJFIGCMFQKBBQFQDNGCNKHKGDLDCLCPQPKDNLDLAPIBCGDNDFECGGGAJLAEOENFLPOBKHPGOD.F.MGBAAIMACNIEAANKCNPJIDM.HPM.EFODMLGE.PL.JCHF.AHHCPALOPPNFLGAHPIPADQQIEDBQFLDJIEPANLLJNNQBNGALAAQOCBLGOK.IMBHBMFMFBBQLCODMFEJOFHGJMJFHOJOOLPHHMFAPDNIIJEPO.NM.A"

Returns: "AEODLQCADQELDPKNGQLNGCGOLDANLOQJELDJCMDECEIIBAJAIIKIDPBMEFAQONEDACBKHCNKFACBCNMEDAHGEIAQEHHKDJDLBPDELHAHBEIEMHGNHDAJGFAGEDJGACQLCJNIHINHMPMHJMIQGKQJAIOAAKEPPAFGCQPKMGJAMLDOMOQFDNQCNPFCAINBMAIEGEABLHKHHOMAOIAANKHPKOBDIMJIAPKMFJHNKMNOOGPAMECKHQJBJGGOEKGQBABNLNDOLNQLGHBBPNKDGHDIDEJLFABNIQEFCQNCQAJPKJPFANLEIDLIQQCJJEAPMPCALELGOEAPKPHLAIEJBGKABOQQNEAOJGBOAJBECALEBKDAHHBEANHPAIGBDGEBBCBAOQGGIGDMKKLAHHBBJPGHMLNBLPGBCOQEAFGCJAIDMQQNHLQLABGDCOCGACLPNIFOKBAAGMDJMAEIBHFDPCHBNGGIOCLFJKIIFIALHDLBPGJLJMLJNGQOGAQKACHPFDDCFIGIDGIHABCPOGKALOJKQEQKNIACHINQFMANFABNKHPFEQKQCJQFLAHQDEJJPBABGDLGMNMMNOAJDLPMCOOEIOAPAFFCNQACKKNDKGJJMGCLIGBEDICBKHHEMCINOFGMDFMQBHBACKFJLANJMGJFMAEENMHLMDIMIAQDALHNJOOCJJIKKPIDCLABAGHJJJODMQKBPBNAPDICAHDKEGNMHHLHDKABOIBHMAKHNLOGNADHICJHPPFANDLQMLAMGJGKLKAEABGNJADAOQJDCLPDEENEABKBLADJGJHHEHLPKOKILCPHQHDEAQQKHGFAABQAEJGJFKDOJIPLPDMDOKEAPEBFHDPNFAHHAJAKMJLOEBLPMHFGLFONAOEBOBBBJOAIHCNKNINFQJBAEGFEMIGDAEGBDKACGKDLPPAGDDNHLEHOBCAFGMIJABKFHKCHHLLEQDPEEADGPOIEABOOHPGBFKAQBAKBOKKLAKKNEFLIHDQGPHHFHQLNFANMFDNBJPPCJMFCAMBAHGLKABOEALHAHBPAAFMAFAMEQHNEHAFGHLAQEAQABOQDDLKBGAJBGAIIGCBQCMPJPDFMKDAEHGBAOMDIHIMODIIFDOBIHQBAIIGAJKQOGLCCEIJCGDEMBABJINLLJQHKCEFJCFFEDHAENAKNLAOCPOQAFJPPOBLFOKAOGMPAMKALBBQAQQEFGCDJDQABOIJMAOKMKNQKQGILQCDNLNAHDCHIBADNQBCADBAKCEADHHBDADIHBPAFAIMCKDBJBACBMIADOBCNNFQAKCDJLBQDDPQHDJKBPKJQDKJKOQJPQGDAGQNABAKLBNNAIGQOGHECCEHCAOABBIFNBCPNOABJEEILDCJODFBQHKFAKALGQFGAGMFBPHAJCFAPAIBHAPPELEAHLHALHACGGADAOAELGGQOOLDCALFOPLHBDPPAGHPLPEKONOQMIEHKLNCHIQCCAHGNEEICFGFOPDMACKGBDAKFDKJAPQHAPEJGEIDFOJIMOACLAQCKAPGPJGOBKBHKANAHKNCJEKDQEKQBPCNBDLAQBACBQMHPCACOPABLKAFJELPCQJNKHAGEEBQPFCIJMIHJAIJOKQJIFOLLNOMELJBNGCAAOKGBOAMELJOQHQIFBQHPLANDDLOPDJFCHQNKGEOFJMNBAAHAQDCBGLOALNFPDOLLCPOBEFMOGPGNNOFJKQPANFGPABQMEIAQJFQLEDLGEINBAAALJBELNGIAEHQKPKPAABPAKAAOOGLMHHAJJGKMBAQMPOLAFBGJBANKEFAGFODICGJFIGCMFQKBBQFQDNGCNKHKGDLDCLCPQPKDNLDLAPIBCGDNDFECGGGAJLAEOENFLPOBKHPGODAFAMGBAAIMACNIEAANKCNPJIDMAHPMAEFODMLGEAPLAJCHFBAHHCPALOPPNFLGAHPIPADQQIEDBQFLDJIEPANLLJNNQBNGALAAQOCBLGOKAIMBHBMFMFBBQLCODMFEJOFHGJMJFHOJOOLPHHMFAPDNIIJEPOANMBA"
24

"..................................................V...............T...............PJ...................................U........KC....................................................................H............................................X............................W...........R.....................................................................................T...........X................................................................................C.........................................N.............................I..............................................................................................................................D...........A............KC.......J..................X...........S...............WQ...............A....................H..............................K.......X..........M...........W..............................................................L..............C................N......................................................................F................................................................A..........G....................T...............................M.............................................................R..........G........................................................U.............................................................................................C........................S......G........L.................T.................................X......................T....................................................................................................P....................................N................................................G....................................N......................................................B............E......................................................................................................................................E........R........O................................................................................O.......................N..................D............"

Returns: "BABABABABABABABABABABABABABABABABABABABABABABABABAVABABABABABABABATABABABABABABABAPJABABABABABABABABABABABABABABABABABAUABABABABKCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABHABABABABABABABABABABABABABABABABABABABABABABXABABABABABABABABABABABABABABWABABABABABARABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABATABABABABABAXABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABANABABABABABABABABABABABABABABAIABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABDABABABABABCABABABABABABAKCABABABAJABABABABABABABABABXABABABABABASABABABABABABABAWQABABABABABABABCABABABABABABABABABABAHABABABABABABABABABABABABABABABKABABABAXABABABABABMABABABABABAWABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABLABABABABABABABCABABABABABABABABNABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABFABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAGABABABABABABABABABABTABABABABABABABABABABABABABABABAMABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABARABABABABABGABABABABABABABABABABABABABABABABABABABABABABABABABABABABUABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABSABABABGABABABABLABABABABABABABABATABABABABABABABABABABABABABABABABAXABABABABABABABABABABABTABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABPABABABABABABABABABABABABABABABABABABNABABABABABABABABABABABABABABABABABABABABABABABABGABABABABABABABABABABABABABABABABABABNABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABEABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABEABABABABRABABABABOABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABOABABABABABABABABABABABANABABABABABABABABABDABABABABABAB"
10

"......................................................................................................F...............F..................................................E........................................................................................B...................D.............................E....................................................................................D..................................J...........................GA........................................................................................................................A.....................................................B....................D................................................................................................................J..............E...C............................................................B...................................F..................................................F...........F......................G........................................................G....................................................................................................J..................................................IE..........................................................................................................................................A...............................................I.................F..........................................................D.G............F..........G..........A.............................................D......................DJ......................B.G.......................D.............I...............I..........................................J..A..................................................................B...................................................J..................G..J...................................I.....................................................C...........................H....EG..............................G...................................B..................................C.........................."

Returns: "BABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAFABABABABABABABAFABABABABABABABABABABABABABABABABABABABABABABABABABEABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABADABABABABABABABABABABABABABABAEABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABDABABABABABABABABABABABABABABABABABJABABABABABABABABABABABABABAGABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABDABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABJABABABABABABABEABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABAFABABABABABABABABABABABABABABABABABABABABABABABABABFABABABABABAFABABABABABABABABABABABGABABABABABABABABABABABABABABABABABABABABABABABABABABABABGABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABJABABABABABABABABABABABABABABABABABABABABABABABABABIEABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABIABABABABABABABABAFABABABABABABABABABABABABABABABABABABABABABABABABABABABABABDAGABABABABABABFABABABABABGABABABABABABABABABABABABABABABABABABABABABABABABABABABABDABABABABABABABABABABABDJABABABABABABABABABABACBAGABABABABABABABABABABABADABABABABABABAIABABABABABABABAIABABABABABABABABABABABABABABABABABABABABABJABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAJABABABABABABABABABGABJABABABABABABABABABABABABABABABABABAIABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABAHABABEGABABABABABABABABABABABABABABABGABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABAB"
21

"OR.EPS.ESA..IBU.IPIMK.UA.KSUAQTEI.HBUQ..H...NJ.FLTUT.AN.BBK.T.TTCBM.QF.N.ND.OFSJLJ.PGUFADLBPG..RPJ.R.P.N.JABTHNFPORNIIGGD...DK.RHHGCHLMICF.O.BRALTJK.RCCUFA.O.TTCS.J.PRFNP.B..IPC.CBLAHKHLSBJ..OMQE.O.HIMN.M.TA.LMI.P.SABF....SNLO.O..CIOQKGLPM..JGSLGUC.CL..EROS....M.MRIAQB.M.PU.A.RDFG.J.UPH.D.JQJM.RRAAFCF.SJEMHLQRNM.MQ.Q.TUL.BR...UOREEPPIRU..MONDJTF.NMJ.TK.P.DUUP.NP.B.MTOENPBOOPK.C.SMPOGGOQ.A.AL..OMLJKKC..B.U.Q.KDLFK.Q.FU.IEPUDCE.FIBGMB.HGRJB..IDAB.LECJ.....NBB.FICUJH.MT...JK.PET.HC.SG.IJ...IU.HE.F.ANTABH.F.HE.PG....NMN...PHDPR.KJ..KM.K..R..D...KTLNNP..OJEQU.AOTEOS.HDRA.S.Q.KMRAI.SFB..U.MFLF.R.CFELN.LFU.ACOMTKJ.JPSQ.CHKN..NERJPU.HUAF.O.M..G.PB..ECQUO.TC.HRPML.LO.R.LBHL..PC..PGLFDJ.LMOHNTG..UBD.Q.D.JAU..Q..SF.T.NBRHIRELD..OHGQDFLUFUN.QOLGJQSU..BR.H.GE..LC.DQ.OH.R.U..ELULO.Q..HOMQK.GP.D.GQ.L.LHUHUPCJF.L.JB.J..JE.K.TJPAETDGPQTQ..U.BDQAA.HFADGU..F.FTUNPRNMO.S.MJ.Q.DSS.FJ.SPUODNOFOGF..GJ.QM.SJA..MMSC..P.B.P.AETQQDKNC...I.SRQGGMI.P.H.CHHTSLISD.E..B.NG.R..FHN.P..A..FEKGN.DSEBSAJEGR.IN.NI.A.D.G.JK.L.MQDF.CP.GJB...CRH..PHM.OS..D.EMH.SU.Q.JHNLP..FTB.PR.NONOOENKUCP.OLHNU.U..D..L.G...CKE.HC.Q.M.JJ....FFLHP..DQTEBT.RA.OBILPGFN.O.RF.MTTIGMSPMEDUJKQI.A.OFGJ.CNFPCSKJHMDU..A..RPTJJ.QQLUISPB.BKLJLLDC.NRROPJMTC.GJ.TIS.OSHJ.DB...RKCIGLJFDH.F.ACNONSH.KQLP.SL.L.FOB.AARANBPNM.C.IFKD.T.O.A.FGEOIK.AFHBR.CPIDJAKLHDIGS..PC.JA.R.DA.NRH..TG.OA.NI...G...QNSADFFET.TKAMIPIFR..A...HQTUUKE..IFNA..K..CJFEIEHF..PPFCGOANMUPS.URNCQ.UQ.OJIFRDJSGPTDILDFST.H.DO.IBCP.JC.KPHN.CPS.H.NATM..PGJSPEUI.B.BCPSOPO.GAHJDS.HM...BD.OD.JA..L.QCG.NTCFQ..QEBS..FRHTP.K.T.G.L.AMN.BQ.HSTGSMB.GQRE.OUHU.NGOGUOD.TT.DMNFBA.PIR.C.NOTE..LCSR..CR.LN..PK.SB.IEFADU.H.EJBOJCSLNHR.TE..O.M.FB.IKHG.QJ..OI..CI.P.OISUUFHGJ.MCPE.CDPTHK.SD.I.II.UT..UKNFQME.Q.ETEMI.BJLGK..OR.J.KDFL.OL.BMD.J.HCS.MHO.P.PRS.PPEKI..A.JEO.OQKGOUPCT.N.MBMMCGFGN.EONRUK.DRGLUON.EBNTK...RMAEEA.FKT.L..NP.DPOUFMLU.IL.L.EP.HMNS.EAHAICBAJEJUFAJJSEQR..BQ..JRM.L.R..U.S.SHK.NNPPCQJ.BCQCUT.AADQJHP..C.NNDB..CQTTSTMTBE..TQDRPF.AJ....LR.G.FT.RGKN..SDSUU.A.M..NCFM.OTPG.ON.JGUE.HBF.NQ.ABJTNE..HUEN.F.BSECMU.HND..OSL.GJ...K.ITQUP.G.S.DN.B.ODP.ELNSPUPTDQQL.GPCAH..PF..OTER.EDRGCFUA..RKUF.JNHAKNQBR.BJ.M.RH..AQTUBTKPRNJAJQPS.TI..C.B.PERCILDIU.QE..CTIMUI..MER.NHPDHFLKBJOJ.UI.EK.M.LMDKBDHRRL..UQ.DRNP..SCUN...TQDNBM...D.BCMCH...SN..K.USFEQQE.TTDCQ.ITEIAH..J.OC..UPQFBKEGUR.PDARGMCMF.FUIGIIPHIJRFTFK.HGN.K..Q.QBMPO.Q.B.CBSSP.E..CJOJMN.MIRGR.SK.K.U..HGO.PE.JE.P...KGKHQI.JCEDRHQRKATO..T.AMTMFO.RKBOK.FAEEDJOKR.NRIK.ITINI.T.TMPE."

Returns: "ORAEPSAESABAIBUAIPIMKAUABKSUAQTEIAHBUQABHABANJAFLTUTBANABBKATATTCBMAQFANANDAOFSJLJAPGUFADLBPGABRPJARAPANAJABTHNFPORNIIGGDABADKARHHGCHLMICFAOABRALTJKARCCUFABOATTCSAJAPRFNPABABIPCACBLAHKHLSBJABOMQEAOAHIMNAMATABLMIAPASABFABABSNLOAOABCIOQKGLPMABJGSLGUCACLABEROSABABMAMRIAQBAMAPUBABRDFGAJAUPHADAJQJMARRAAFCFASJEMHLQRNMAMQAQATULABRABAUOREEPPIRUABMONDJTFANMJATKAPADUUPANPABAMTOENPBOOPKACASMPOGGOQBABALABOMLJKKCACBAUAQAKDLFKAQAFUAIEPUDCEAFIBGMBAHGRJBABIDABALECJABABANBBAFICUJHAMTABAJKAPETAHCASGAIJABAIUAHEAFBANTABHAFAHEAPGABABNMNABAPHDPRAKJABKMAKABRABDABAKTLNNPABOJEQUBAOTEOSAHDRABSAQAKMRAIASFBABUAMFLFARACFELNALFUBACOMTKJAJPSQACHKNABNERJPUAHUAFAOAMABGAPBABECQUOATCAHRPMLALOARALBHLABPCABPGLFDJALMOHNTGABUBDAQADAJAUABQABSFATANBRHIRELDABOHGQDFLUFUNAQOLGJQSUACBRAHAGEABLCADQAOHARAUABELULOAQABHOMQKAGPADAGQALALHUHUPCJFALAJBAJABJEAKATJPAETDGPQTQABUABDQAABHFADGUABFAFTUNPRNMOASAMJAQADSSAFJASPUODNOFOGFABGJAQMASJABAMMSCABPABAPBAETQQDKNCABAIASRQGGMIAPAHACHHTSLISDAEACBANGARABFHNAPABABAFEKGNADSEBSAJEGRAINANIBABDAGAJKALAMQDFACPAGJBABACRHABPHMAOSABDAEMHASUAQAJHNLPABFTBAPRANONOOENKUCPAOLHNUAUABDABLAGABACKEAHCAQAMAJJABABFFLHPABDQTEBTARABOBILPGFNAOARFAMTTIGMSPMEDUJKQIBABOFGJACNFPCSKJHMDUABABARPTJJAQQLUISPBABKLJLLDCANRROPJMTCAGJATISAOSHJADBABARKCIGLJFDHAFBACNONSHAKQLPASLALAFOBCAARANBPNMACAIFKDATAOBABFGEOIKBAFHBRACPIDJAKLHDIGSABPCAJABRADABNRHABTGAOABNIABAGABAQNSADFFETATKAMIPIFRABABABHQTUUKEABIFNABAKABCJFEIEHFABPPFCGOANMUPSAURNCQAUQAOJIFRDJSGPTDILDFSTAHADOAIBCPAJCAKPHNACPSAHANATMABPGJSPEUIABABCPSOPOAGAHJDSAHMABABDAODAJABALAQCGANTCFQABQEBSABFRHTPAKATAGALBAMNABQAHSTGSMBAGQREAOUHUANGOGUODATTADMNFBABPIRACANOTEABLCSRABCRALNABPKASBAIEFADUAHAEJBOJCSLNHRATEABOAMAFBAIKHGAQJABOIABCIAPAOISUUFHGJAMCPEACDPTHKASDAIAIIAUTABUKNFQMEAQAETEMIABJLGKABORAJAKDFLAOLABMDAJAHCSAMHOAPAPRSAPPEKIABABJEOAOQKGOUPCTANAMBMMCGFGNAEONRUKADRGLUONAEBNTKABARMAEEABFKTALABNPADPOUFMLUAILALAEPAHMNSAEAHAICBAJEJUFAJJSEQRACBQABJRMALARABUASASHKANNPPCQJABCQCUTBAADQJHPABCANNDBABCQTTSTMTBEABTQDRPFBAJABABLRAGAFTARGKNABSDSUUBABMABNCFMAOTPGAONAJGUEAHBFANQBABJTNEABHUENAFABSECMUAHNDABOSLAGJABAKAITQUPAGASADNABAODPAELNSPUPTDQQLAGPCAHABPFABOTERAEDRGCFUABARKUFAJNHAKNQBRABJAMARHABAQTUBTKPRNJAJQPSATIABCABAPERCILDIUAQEABCTIMUIABMERANHPDHFLKBJOJAUIAEKAMALMDKBDHRRLABUQADRNPABSCUNABATQDNBMABADABCMCHABASNABKAUSFEQQEATTDCQAITEIAHABJAOCABUPQFBKEGURAPDARGMCMFAFUIGIIPHIJRFTFKAHGNAKABQAQBMPOAQABACBSSPAEABCJOJMNAMIRGRASKAKAUABHGOAPEAJEAPABAKGKHQIAJCEDRHQRKATOABTBAMTMFOARKBOKAFAEEDJOKRANRIKAITINIATATMPEA"
12

"F..DE...CJC.H..E...L.F..GI.....DHA.FHE.CA.HACF..G.I.A.D......E....CAKBCLCJGD.LC.C..J.H.BA.EC.DB..LFKEHG...I.....CCLD....K...DLGL..GB...FE.G.....BC.BFLGE.......I..F.CE..HJG..FDB..L.E.CH.AD...CA.H.DJGGAKBF....C......L.LD.KC..JD.DF.K.F...G..BH.LL.H.CL..E..C.DE..I.F..F.....A.........CCBK.C...B..JK.....FDF..D.I.A.H.ADA..EE.EDL..G...I...IJ.H.I..IGE.C.JG...DB..KI.F.D..H.FH....K...F..EF.KJF.......A.KFF....C..DF..CC.B.FK.EB.JGGL.GGLJ.K.E.....D.H.H.BE..H..EK.CLDLK..A..I...K....JG...E..J....K...F.....H.I..CJHKB.....K.FCD...JCAH.AC.G..K.GAIH.....DLG.D.....KHEJB.CFKKDE...F.JIL.......C.DK..FCBLF.LD..F....F....GLDGB....HE.EDD.....C.BJ.FFJ...C..JBI.E........DGBH.CF.JK.F.I.....AG.....F.LJ.HFE.HC......LKBF.B...G.K..DHA.G..KKF.DL.FIIB.FC..C...LC.JF..BL..G..E.E.L.HF.....KCJ.HEG.KKDDA..KG.C..LI..I...HE..DK.G...HGIF.F...A.K...E.IA...E.J...DD..J..EKL.......AB.BF.L.G...FJCA.G.E....HIKI..A.D.....A....BKIL.J..KBBHGJ.....AD.FJ..GG..C.AI.KKI.G......B......IB....L...A.D....H...LD....E..CEK..E......K...J.BKH.CAD.....JJFHJE........C.A...HJC.BJB...K.C..AD.EJB...IJ...........LBI.I.....JCJ.ID.FAD...AH.E.LJ.FCBD...B....EI....AL..E...JD..K....C.I.I.K.DG..CL...LE.B..L.E..FBI.IAH..G..F.CDIFDC...E.AJG.EFB..DB.I......HL.H..C.A.G.....I..DE..C...LAL..H..LG.....B.....H..KB..F..J.D..G....EFJ..L.IK.E.JE.L.FL....KE.H..CAF.I..I..J...H..ICJ..IA....F.D..F....J.C.B.L...I....G...I.A.DJ..FKH.JK.D....E.....L....B.....AF..FB..K..KIE.I.KC...D.....JH.L.F...AH.K..BCH.DHI..F...I.L.H.BFB.IK.LFF..F.......EE.CC....GH..EI.J....D..I.A.BKBF.B..F....GAHK..HJA.LDA.A...I....IDJI...DLDEHH...C..C..BH.IC......EAK..C...DA.D.I.B.....G....A..LDED.IH.D.A.G.........J......B.LDA.LK.E..IK...DK..F.D.GG....B..C...HJ.D....GK.E.GE.CGJ.A.C.E.....GD...J.C....B..C....KK.I...D..CC.......G..BEKEC...L.D.GBEBI...A....AC.H.G..GF..HICLJ...F.H.HDB.L..GCLILLGC...IG....ID...LJ..E.B.....CB.B.L....CFL.KJ.FH..E..H....A.....F.D.GAL...E.K.E.H.FA.BLIB.D.I.........A.BE...AHJFJB..BCI.C...FJ.B.G.F..F.AHJ.AHI..H..BJH.EJKC.JAK.H.......EC.HI..I....HG..FB.L..A...L..LD..E...E..C.K..HICHKLCCK..G.BLE....HK....B.HA"

Returns: "FABDEABACJCAHABEABALAFABGIABABADHABFHEACABHACFABGAIBABDABABABEABABCAKBCLCJGDALCACABJAHABABECADBABLFKEHGABAIABABACCLDABABKABADLGLABGBABAFEAGABABABCABFLGEABABABAIABFACEABHJGABFDBABLAEACHBADABACABHADJGGAKBFABABCABABABLALDAKCABJDADFAKAFABAGACBHALLAHACLABEABCADEABIAFABFABABCABABABABABCCBKACABABABJKABABAFDFABDAIBABHBADABAEEAEDLABGABAIABAIJAHAIABIGEACAJGABADBABKIAFADABHAFHABABKABAFABEFAKJFABABABCABKFFABABCABDFABCCABAFKAEBAJGGLAGGLJAKAEABABADAHAHABEABHABEKACLDLKABABAIABAKABABJGABAEABJABABKABAFABABAHAIABCJHKBABABAKAFCDABAJCAHBACAGABKAGAIHABABADLGADABABAKHEJBACFKKDEABAFAJILABABABACADKABFCBLFALDABFABABFABABGLDGBABABHEAEDDABABACABJAFFJABACABJBIAEABABABABDGBHACFAJKAFAIABABCAGABABAFALJAHFEAHCABABABLKBFABABAGAKABDHABGABKKFADLAFIIBAFCABCABALCAJFACBLABGABEAEALAHFABABAKCJAHEGAKKDDABAKGACABLIABIABAHEABDKAGABAHGIFAFABCABKABAEAIABABEAJABADDABJABEKLABABABCABABFALAGABAFJCABGAEABABHIKIABABDABABCABABABKILAJABKBBHGJABABCADAFJABGGABCBAIAKKIAGABABACBABABABIBABABLABCABDABABHABALDABABEABCEKABEABABABKABAJABKHACADABABAJJFHJEABABABABCBABABHJCABJBABAKACABADAEJBABAIJABABABABABALBIAIABABAJCJAIDAFADABCAHAEALJAFCBDABABABABEIABABALABEABAJDABKABABCAIAIAKADGABCLABALEABABLAEABFBIAIAHABGABFACDIFDCABAEBAJGAEFBABDBAIABABABHLAHABCBABGABABAIABDEABCABALALABHABLGABABABABABAHABKBABFABJADABGABABEFJABLAIKAEAJEALAFLABABKEAHABCAFAIABIABJABAHABICJABIABABAFADABFABABJACABALABAIABABGABAIBABDJABFKHAJKADABABEABABALABACBABABCAFABFBABKABKIEAIAKCABADABABAJHALAFABCAHAKACBCHADHIABFABAIALAHABFBAIKALFFABFABABABAEEACCABABGHABEIAJABABDABIBACBKBFABABFABABGAHKABHJABLDABABABIABABIDJIABADLDEHHABACABCACBHAICABABABEAKABCABADABDAIABABABAGABABABALDEDAIHADBABGABABABABAJABABACBALDABLKAEABIKABADKABFADAGGABACBABCABAHJADABABGKAEAGEACGJBABCAEABABAGDABAJACABACBABCABABKKAIABADABCCABABABAGACBEKECABALADAGBEBIABCABABCACAHAGABGFABHICLJABAFAHAHDBALABGCLILLGCABAIGABABIDABALJABEABABABACBABALABABCFLAKJAFHABEABHABABABABABFADAGALABAEAKAEAHAFACBLIBADAIABABABABCACBEABCAHJFJBACBCIACABAFJABAGAFABFBAHJBAHIABHACBJHAEJKCAJAKAHABABABAECAHIABIABABHGABFBALABABABLABLDABEABAEABCAKABHICHKLCCKABGABLEABABHKABACBAHA"
3

"ACBAACAABBCABBAABBBCBCBACACABAACCAABBBCBBCAAABABBBBBCBAABBCABACCAAABCACCBACACCABCABABCACBABBBCBCAAABABABABCAABBBCABAAACAABBCBBABABCABBCAAACAABBAACBACCAABCBCCCCABABBCCABBABBBBBBCBCBBABBACBBCAACABCABCABBBCAACACBAACCACCCAAAABABBCCABBBCCBABCBCAAAAABCBCAAACAACAABACCCBCCABAACAAAAACCBAABACBAACCCAACBACBCAACACCACABACBCABBBABBABCAAAACAACCBCCABBAACACAACBCABAABACBACBACBACABACABABC.CBABCBCAABAAABCCCACCBACBAABCABAABCABBBBBACCBCCCBCBCCBAAACABCCBCBBAABBCABACBBABAACABCBBACCBABCC.CBCBAABBCCCCCBCAAABAACCBACACAACBACBAACACAACCCACAABBBCCCACCCABAABCACABBCAABABAA.CBCBACACCCCCCAABBBCABBCBACACACABBCCBABBACBAACCABABABCABCBCBCCCAABCABAACCBCBACAABBCCBBCABAAABCCBBBABAABCBBAACBCBBBBAAACCACAA.BCBAABBABCCBCBCCCCCCCCBBBBAACACCBBCACABACACCAAAACAAAABBAACCCCACBCAACAAAACBCACCBBCBBCBABAAACAACAAABCCBCBBBBCCCCCCACAACCCCCCBCCCACACBCBABACCABBAACABCBABABBBBCBACBBBAACBABCCABCBACABCBACCAACCACAACCCBACCCBACBAACAABCABCCBCAAAACBCACCCBBBCBCBBAACAACABCBAAACCCCCCCBACCAAACCCABAABBAACAABACBABAACCBCCBCABACCABCBABCABCBA.CBBACABABCBABCBAAACBCCAACCACCABBBBABAACBCCBABCBBCBBCBCACBCCBBBBABCBACAACCACAAAACACCBACBBBBABACCABBCAACCAABABBCCCABAACCACBCBBBBBAABBCCBAAABAABAACABBABBCABABCBCCACCBCAAABCBAACBCBBBBBBCCBABAAABACBABAABCABBCBCACABACBBACCCAAAABBAAAACAAAABCBBBCCBCABBABBCCBBBCCABCBBABBCBAAABCCCCACAABBCCCACBACCCACBCBCCBACAABBBBCBACCBBABABCCCBBABBCBABABBCCCAAACCAACCBACAABCAAABBCBACCBCCBBACBBAACCACCABCBBBCBCBAABABCAAAABABBBCACBBCCBCBCCCAABACACAAABCCACACCACCBABCBBBACBCCBCBAACBBABBACCCABCBBCCBABBCAABBAACABCACABBBCAABAACAAAABCBCBBCACCBAAACCBABBCCCABAACCBCCCBCCCBAABCAACCBCBBCBCCBCAABBCBCAABBABBACCAACAACABCCCCBAACCACCACCBACBBACBCACBBACAAABCBCAAACACACCBBBBCABABACCBBBABCBBCCAABABAABAACBBCCAACBCCABCBACCBCAAABCACCCAAABBCAACBCCACCCACACCCCCBBAAAAAABABBCCACBCBBCBBBACABBBAAAACBBCC.ACACBCCBAABAABCBBCCCCCACBCBBACACCCBCCCABBBBBBACBCCCBBACCBBBBCAABCCBAABBBACCCBBBBCAAAAAABCABBCCBBBBBBCABBCCABCBAACCCBBBACCBAAACABBBCCAAAABCAABCBBCBCAAACABCACABACABBCBCBCACBBABCCCCCCBCBCBABCBCBCBCBCBCCACCBACABCCCACABBACACCCABBBCBABAABBCCBACABAAABABBCCCBCBABABABCAACBABABCAABBBBBABB.BBAAACBA.CBCAABAABABBBCCB.CBBAABCCBBCCBCCCCBCBACACBBACABCAAAAAAABCBAABBCCBCCCBABBCCCAABCBCAAAAABACB"

Returns: "ACBAACAABBCABBAABBBCBCBACACABAACCAABBBCBBCAAABABBBBBCBAABBCABACCAAABCACCBACACCABCABABCACBABBBCBCAAABABABABCAABBBCABAAACAABBCBBABABCABBCAAACAABBAACBACCAABCBCCCCABABBCCABBABBBBBBCBCBBABBACBBCAACABCABCABBBCAACACBAACCACCCAAAABABBCCABBBCCBABCBCAAAAABCBCAAACAACAABACCCBCCABAACAAAAACCBAABACBAACCCAACBACBCAACACCACABACBCABBBABBABCAAAACAACCBCCABBAACACAACBCABAABACBACBACBACABACABABCACBABCBCAABAAABCCCACCBACBAABCABAABCABBBBBACCBCCCBCBCCBAAACABCCBCBBAABBCABACBBABAACABCBBACCBABCCACBCBAABBCCCCCBCAAABAACCBACACAACBACBAACACAACCCACAABBBCCCACCCABAABCACABBCAABABAABCBCBACACCCCCCAABBBCABBCBACACACABBCCBABBACBAACCABABABCABCBCBCCCAABCABAACCBCBACAABBCCBBCABAAABCCBBBABAABCBBAACBCBBBBAAACCACAACBCBAABBABCCBCBCCCCCCCCBBBBAACACCBBCACABACACCAAAACAAAABBAACCCCACBCAACAAAACBCACCBBCBBCBABAAACAACAAABCCBCBBBBCCCCCCACAACCCCCCBCCCACACBCBABACCABBAACABCBABABBBBCBACBBBAACBABCCABCBACABCBACCAACCACAACCCBACCCBACBAACAABCABCCBCAAAACBCACCCBBBCBCBBAACAACABCBAAACCCCCCCBACCAAACCCABAABBAACAABACBABAACCBCCBCABACCABCBABCABCBABCBBACABABCBABCBAAACBCCAACCACCABBBBABAACBCCBABCBBCBBCBCACBCCBBBBABCBACAACCACAAAACACCBACBBBBABACCABBCAACCAABABBCCCABAACCACBCBBBBBAABBCCBAAABAABAACABBABBCABABCBCCACCBCAAABCBAACBCBBBBBBCCBABAAABACBABAABCABBCBCACABACBBACCCAAAABBAAAACAAAABCBBBCCBCABBABBCCBBBCCABCBBABBCBAAABCCCCACAABBCCCACBACCCACBCBCCBACAABBBBCBACCBBABABCCCBBABBCBABABBCCCAAACCAACCBACAABCAAABBCBACCBCCBBACBBAACCACCABCBBBCBCBAABABCAAAABABBBCACBBCCBCBCCCAABACACAAABCCACACCACCBABCBBBACBCCBCBAACBBABBACCCABCBBCCBABBCAABBAACABCACABBBCAABAACAAAABCBCBBCACCBAAACCBABBCCCABAACCBCCCBCCCBAABCAACCBCBBCBCCBCAABBCBCAABBABBACCAACAACABCCCCBAACCACCACCBACBBACBCACBBACAAABCBCAAACACACCBBBBCABABACCBBBABCBBCCAABABAABAACBBCCAACBCCABCBACCBCAAABCACCCAAABBCAACBCCACCCACACCCCCBBAAAAAABABBCCACBCBBCBBBACABBBAAAACBBCCBACACBCCBAABAABCBBCCCCCACBCBBACACCCBCCCABBBBBBACBCCCBBACCBBBBCAABCCBAABBBACCCBBBBCAAAAAABCABBCCBBBBBBCABBCCABCBAACCCBBBACCBAAACABBBCCAAAABCAABCBBCBCAAACABCACABACABBCBCBCACBBABCCCCCCBCBCBABCBCBCBCBCBCCACCBACABCCCACABBACACCCABBBCBABAABBCCBACABAAABABBCCCBCBABABABCAACBABABCAABBBBBABBABBAAACBABCBCAABAABABBBCCBACBBAABCCBBCCBCCCCBCBACACBBACABCAAAAAAABCBAABBCCBCCCBABBCCCAABCBCAAAAABACB"
23

"JEWWVKBUMJVSSWVTB.OSL.BNLPN.WI..IILVQU.BHEBRH.IOTWA.GHIVCCO.KGV.G.CNGDG.PWA...WMEMF..VAOJQSGA..MRWHI.L.IOUWCNUNNI.G.SDK.W.IQMBACMWIVGOH.RS.IDPRUUCF.CDUHI.EHFNIWBDCO..NDCC.CTOP..GHVI.W.KVKBVLINOCT.JI.RD.G.ER.KBW.FFTDDK.UA.BCIJW.NCINJIHJ.JGGIF.SL.F.DNTEM.EQ.ABNTTIHVIKDOTON.V.FL.T.BV.WB.MPC.IPV..SF.LOGBBKCTLPIEAJBFCNTKL.IF.GQR.MAFJF.NRFDQOVIK.W.FMJI.NWKSLEE.WODGMAU.NON.QSQVP..FE.UP.JW.ANVSIK.QMEQ..H.AT.E.SOG...IHE.PQ.FIVLOMM.UWOLKKI.OCUHO.PPBWFIS.IG..K.L.ULSCHMHFH..B.FBQUQ.ALQALG.DJA.CIRQGC..AAOKUQNKCLB.QDQ..TPEMQMITNLMLFSDLJORKASRT.PENTGSI.HF.TBE.VPPG.TC.OMBE.LKCJNN.BP.RVCIPGTGDQTU.OJPBLQAP.I.KH.JIV.MOJJSGUFNCWVF.KM.NAMVJOUC.RPBJIFNE.EOCRC.V.BQV.J..D.OIB.BAM.K.AD.WASKHVHI.T.M.NB.LQQ..KHHPJJNPCFWCDHBHSTG.E.A.U.ITOPCAW..D.LVL.Q.FP.F.OEMM..KAOOR.HGOQN.LALVIQRQVNC.DTUSHSJDSV.RIWWNFRWAJJG.LOOS.DQBIGUVFIN.QVRIRTGBTKSHJF.GSF.UAGBW.LV.CG.D...KL.E.L.OCFJMWJEI.WILTUD.D..GPDV.VRWGQ.UQTPDULOLUKNKVMIKHPSGERGUP.SKSKTCG.K.AJFASBWRV.E.SA..QWERWDHTTKROFBNJQVJVRNENIOJRPQJNME.LGSRMQHBUOGDSLWRCD.CIUSHUTFA.MEHB.EV.KBUBH.BUMJOM...I..I.JDCE..NKDOVQITDK...RVISWDTUE.JDMBGBVTWCM.MUHM..WP.VU.KUMEQRAUC.EMOVWOPJW.EIW...U.FWBCHL.MCJTRQ.GMJO.JSVQFOSD..TOJCT.RPNPWT.CDLJR..GN.W.UMMM..M.SUVBKUVBN..IB..QGVEIISHVE.IIVAUBG.IJKTKNNM..EBU.WRHNDSFUK.EWNGDEUGDWEAKTUJ.HUIGOKFIGNQH.QKCQCMSQQIFI.SIEKQ..JUTPFRDNEVKG.L.LLCENMKK.RPATMO..QN..OHF.KT.QHHPGJOFPHGWVEQV.GNKB.EPR.FSO.U.FPSGLNGEDQB.SEOFK.DQKIRS.BGG.JEGFDOUKLMPRSE.AHBOPWUPJWCTTGLJ.TFH.PJSPE.AQPJCDCSLG.EHNR.QSUKKLGTWPRRQGJVHR.ITPFWHNAGKBSB.BTHI...LBFA..GPLMOI.VTINA.DJG.FCPQHD.RFNKDWJOIHVITSVM.RT.AGWWGLFRS.GU.VE..OQ.T.S.THALR.AA.QAABI.AMD.CFGQRI.AINDG.U.TBJ.HUB.AP.E.DVRMRNHKNPL.LJFJB.KQU.ITSC.KWSKIFPMBTGHROMSC.IPGWEBNEKUD..RAS.EFLIEGPUOKJ..CPC.B..FF..NQH.UC.VA..R.QMTEQGV.T...WTTQGD.T...IGLJIGLGPU.K.RSJNUH.GWJQBD.ONN.EPF.BGVTNV.NOMBJWR..T.HB..HOEFTHH.VTHQD.LERUGUKDKJPUHISHB.KDGNDCSKJ..QNCWWS.OFCWPVV.B..LI...IB.F..K.V..H.FNCG.CMAAGKS...DRSEOB.DTNOGNT.QWTKDSR.FGUBAUMS.K...I.DE..GBIADRCET..FGBKCQEVDA.PL.WDRNS...LBKNVFHQS.F.KM..RGED.IW.AUCIUWCEFIUCTOLQQAOJWN.I.W.AAKFERQRVG.GWLIPEGPUEBEV..FKTTOEMLTBKUPBSCOE.RHU.DOERTKLB.WSFAOMDT.CU.TMRMCFRE.PTPA.OFIPE.ONVTKSD.C.LMG.RDKGOEND..LA.ICOOP.VRWDDGLT.LDJQHHCMTIBSLIK.BJO.TF.M.TR."

Returns: "JEWWVKBUMJVSSWVTBAOSLABNLPNAWIABIILVQUABHEBRHAIOTWABGHIVCCOAKGVAGACNGDGAPWABABWMEMFABVAOJQSGABAMRWHIALAIOUWCNUNNIAGASDKAWAIQMBACMWIVGOHARSAIDPRUUCFACDUHIAEHFNIWBDCOABNDCCACTOPABGHVIAWAKVKBVLINOCTAJIARDAGAERAKBWAFFTDDKAUACBCIJWANCINJIHJAJGGIFASLAFADNTEMAEQBABNTTIHVIKDOTONAVAFLATABVAWBAMPCAIPVABSFALOGBBKCTLPIEAJBFCNTKLAIFAGQRAMAFJFANRFDQOVIKAWAFMJIANWKSLEEAWODGMAUANONAQSQVPABFEAUPAJWBANVSIKAQMEQABHBATAEASOGABAIHEAPQAFIVLOMMAUWOLKKIAOCUHOAPPBWFISAIGABKALAULSCHMHFHACBAFBQUQBALQALGADJABCIRQGCABAAOKUQNKCLBAQDQABTPEMQMITNLMLFSDLJORKASRTAPENTGSIAHFATBEAVPPGATCAOMBEALKCJNNABPARVCIPGTGDQTUAOJPBLQAPAIAKHAJIVAMOJJSGUFNCWVFAKMANAMVJOUCARPBJIFNEAEOCRCAVABQVAJABDAOIBABAMAKBADAWASKHVHIATAMANBALQQABKHHPJJNPCFWCDHBHSTGAEBABUAITOPCAWABDALVLAQAFPAFAOEMMABKAOORAHGOQNALALVIQRQVNCADTUSHSJDSVARIWWNFRWAJJGALOOSADQBIGUVFINAQVRIRTGBTKSHJFAGSFAUAGBWALVACGADABAKLAEALAOCFJMWJEIAWILTUDADABGPDVAVRWGQAUQTPDULOLUKNKVMIKHPSGERGUPASKSKTCGAKBAJFASBWRVAEASABAQWERWDHTTKROFBNJQVJVRNENIOJRPQJNMEALGSRMQHBUOGDSLWRCDACIUSHUTFABMEHBAEVAKBUBHABUMJOMABAIABIAJDCEABNKDOVQITDKABARVISWDTUEAJDMBGBVTWCMAMUHMABWPAVUAKUMEQRAUCAEMOVWOPJWAEIWABAUAFWBCHLAMCJTRQAGMJOAJSVQFOSDABTOJCTARPNPWTACDLJRABGNAWAUMMMABMASUVBKUVBNABIBABQGVEIISHVEAIIVAUBGAIJKTKNNMABEBUAWRHNDSFUKAEWNGDEUGDWEAKTUJAHUIGOKFIGNQHAQKCQCMSQQIFIASIEKQABJUTPFRDNEVKGALALLCENMKKARPATMOABQNABOHFAKTAQHHPGJOFPHGWVEQVAGNKBAEPRAFSOAUAFPSGLNGEDQBASEOFKADQKIRSABGGAJEGFDOUKLMPRSEBAHBOPWUPJWCTTGLJATFHAPJSPEBAQPJCDCSLGAEHNRAQSUKKLGTWPRRQGJVHRAITPFWHNAGKBSBABTHIABALBFABAGPLMOIAVTINABDJGAFCPQHDARFNKDWJOIHVITSVMARTBAGWWGLFRSAGUAVEABOQATASATHALRBAABQAABIBAMDACFGQRIBAINDGAUATBJAHUBCAPAEADVRMRNHKNPLALJFJBAKQUAITSCAKWSKIFPMBTGHROMSCAIPGWEBNEKUDABRASAEFLIEGPUOKJABCPCABABFFABNQHAUCAVABARAQMTEQGVATABAWTTQGDATABAIGLJIGLGPUAKARSJNUHAGWJQBDAONNAEPFABGVTNVANOMBJWRABTAHBABHOEFTHHAVTHQDALERUGUKDKJPUHISHBAKDGNDCSKJABQNCWWSAOFCWPVVABABLIABAIBAFABKAVABHAFNCGACMAAGKSABADRSEOBADTNOGNTAQWTKDSRAFGUBAUMSAKABAIADEABGBIADRCETABFGBKCQEVDABPLAWDRNSABALBKNVFHQSAFAKMABRGEDAIWBAUCIUWCEFIUCTOLQQAOJWNAIAWBAAKFERQRVGAGWLIPEGPUEBEVABFKTTOEMLTBKUPBSCOEARHUADOERTKLBAWSFAOMDTACUATMRMCFREAPTPABOFIPEAONVTKSDACALMGARDKGOENDABLABICOOPAVRWDDGLTALDJQHHCMTIBSLIKABJOATFAMATRA"
9

"D.CBC...H.DDDGE...D.GHEFEFHEE.EC.EI.D.EB.EA.EEB...C...EDF.FDEI..HDIDAFDIFCCFC.GIHABHDHFC.HDGI.D..GAHBAICD.IBIHGB.A.BDFIE.B..HFBF..D.FDBCH.GG.A.GI..FAEIEIICEIAHBBADA.E.AEIEC.E.C.IIFHAAFH.AB.E.IF.CFAEADF.A..BEG...B.ABDDDD.BD.HHI.IG..B..FB..BHAI.HA....DFC.GH.A.H..EGBAHHEGDBAADCAGFDBIH...B..FGDCAD.C.FGBAGEDF.C.GDFGCED.F..FA.E.HEDDIEGEB.D...EG.GDIEGEACIGGFHBA.C.EBDCD.A..E.GEHHIHC..GFIFH..I.HI.ECGHG...GI.E.BFGEF.F.IA.BFAC..FDIEE....H.EACB.ECDDBF.FI.HGBA..GE..BEGBI.EG.I..EFEC..AHHDAHF....EEBCBIIDFG..H.F.GDGA..EGDDE.H.ICDBIBCH...EII.HGAGC.HIA..DEGIG.FHA..GD.FDG.HEE.D.EBFF.HFFH.H.AGDICEFBIFB.IH.EHE.....FB.E.FA.DACBFA.C.BFDIF.I...DGEF.DDFICE.IB.A...E.A.CA..E.AG...EFB.CB..IBBHDGA..IB.BEEDH.AGE.C.HBFA.FDH.I.B.EC.DCDIA.BCDGBIIDB.GCBIF.BHEEFED.IACC.AGCB..FAI...E.FH.A.H.A.HCFG..CF....GDDGBCE.CG..E.I...G.H.GA...FBGGBED.EA.G.C.FH.E..EE..BCBE..E.CE.B..I.FCFHGDE.BBI..BIGAA..EBBCFFFHEI..CFBFC.F.GIID.F.IFIBF.DE.CCCECADG.HIC.DHD.DB.FFCEGF.C.DCFG.E.E.E...BGD...DEAD.HAG..GBF.GIFDCGAB..FGGDBIHID.F.IGCC.I.BGFA.FH..H.HCD.C....EGAIA.HI.FHCHD.H..BCACDH..DABCHDCDE.CDFBCB.DA.DD.CHB..IGHCEFHC..IDB.IEGGBFDFGCB.BA..DCB.IFAFAG..H..IGAE.I.D.BCIGE.I...DAGFD.FAIG.CH..BHGA.F...I.FIGF.CEB.BBC..GFE.G..CBIECDB.F.D.GEAIB..CEHHI.F.HDE.HIGE...CGC.G.HGB..H.GIG..C.DBC..E.HAACFFAB.IC.CGEDCFA.E..G.ICDDGICE.AGDEH..BHEC.D.AF.ECHDEF..A.EFAAB.GDECBGE..H.BDGG..DBACBBBECDAHGI.EH...EG.AAGGG..HF.A.IAB.AHHE..C.HHBC.FHF.EI.D..E..BHBEF.BAB...D.E.ABEH.GDGCE..H.FEHHGGGF.E...FDAIBFGF..DDI.DCI..A...C.HGIDIBEI.HEF..DHGEHEHEHB.A.I..AIED.E.D..F.CC..EEICAE.BDAIDE.CG.IGGDC.GFB..FABFDE.FAGGHCEHAB.IA.D.FAE..EGC.HADAEA.FEIDFB.HF.IBC.GBEBGAAFFHII.AF.IHH.D..CIDICI.I.AE.HF.EIDC.IB.EEIFHFACB.I.BC.....IHD.FIBI..IA..GGIG...A..E.IFB..H.DDC.FEEE.F.GDEEH.ABA.H.HDBAIBFDHCCCIDGABFB...AA...HHE.H...HBEDBFEB.GHGF..AACH.EA.AIFH..H.....A.GH.I.CBBH..AIIIG.BB.DBGHFFF..I.IBDDBG.IEE.CCIAFA.H..ECIIDC.GIDG.DHD.EC.BAEEDIEH.GIGIIEEF..DA.C.ADCFAD.DH..HBFCHB..E.EFAFICEC..FEF.GIBCI..E....B.H.D..GHADIBGEDE.B..E..F.H..F.FHIGIA.HD.B....FGGFB.IC.HBEIIHDA....I.CEFD..FBD.GGBD..FGAHEGC.ABBH.HCBC..IIE.DHC.IIIBFFICHEIFAFI.FIC.GC...B.FBGBA.BBAFCA..B.BGGCGCG.IAI..FGCGHF..HF.CFADI.DFFEE..E..IHDG.IGB.GHBEDA....EEB.HA.BDFHAF.FHI.F..A..F.CD.G.EDG.DIC..CFFI.BDH.HABED..A.B.I.HDHG.ABH.D....ICAC.BG..A..CHCDBE.DEEFGAIHGA..A.CCH.FFIFE.AGAC.A.HGH.E..BDFE.IC.D.DB.EHD..AGBG.ID..AD"

Returns: "DACBCABAHADDDGEABADAGHEFEFHEEAECAEIADAEBAEABEEBABACABAEDFAFDEIABHDIDAFDIFCCFCAGIHABHDHFCAHDGIADABGAHBAICDAIBIHGBCACBDFIEABABHFBFABDAFDBCHAGGBABGIABFAEIEIICEIAHBBADABEBAEIECAEACAIIFHAAFHBABAEAIFACFAEADFBABABEGABABCABDDDDABDAHHIAIGACBABFBACBHAIAHABABADFCAGHBABHABEGBAHHEGDBAADCAGFDBIHABABABFGDCADACAFGBAGEDFACAGDFGCEDAFABFABEAHEDDIEGEBADABAEGAGDIEGEACIGGFHBABCAEBDCDBABAEAGEHHIHCABGFIFHABIAHIAECGHGABAGIAEABFGEFAFAIACBFACABFDIEEABABHAEACBAECDDBFAFIAHGBABAGEACBEGBIAEGAIABEFECABAHHDAHFABABEEBCBIIDFGABHAFAGDGABAEGDDEAHAICDBIBCHABAEIIAHGAGCAHIABADEGIGAFHABAGDAFDGAHEEADAEBFFAHFFHAHBAGDICEFBIFBAIHAEHEABABAFBAEAFABDACBFABCABFDIFAIABADGEFADDFICEAIBCABABEBABCABAEBAGABAEFBACBABIBBHDGABAIBABEEDHBAGEACAHBFABFDHAIABAECADCDIACBCDGBIIDBAGCBIFABHEEFEDAIACCBAGCBABFAIABAEAFHBABHBABHCFGABCFABABGDDGBCEACGABEAIABAGAHAGABABFBGGBEDAEABGACAFHAEABEEACBCBEABEACEABABIAFCFHGDEABBIACBIGAABAEBBCFFFHEIABCFBFCAFAGIIDAFAIFIBFADEACCCECADGAHICADHDADBAFFCEGFACADCFGAEAEAEABABGDABADEADAHAGABGBFAGIFDCGABABFGGDBIHIDAFAIGCCAIABGFABFHABHAHCDACABABEGAIABHIAFHCHDAHACBCACDHABDABCHDCDEACDFBCBADABDDACHBABIGHCEFHCABIDBAIEGGBFDFGCBABABADCBAIFAFAGABHABIGAEAIADABCIGEAIABADAGFDAFAIGACHACBHGABFABAIAFIGFACEBABBCABGFEAGABCBIECDBAFADAGEAIBABCEHHIAFAHDEAHIGEABACGCAGAHGBABHAGIGABCADBCABEAHAACFFABAICACGEDCFABEABGAICDDGICEBAGDEHACBHECADBAFAECHDEFABABEFAABAGDECBGEABHABDGGABDBACBBBECDAHGIAEHABAEGBAAGGGABHFBABIABCAHHEABCAHHBCAFHFAEIADABEACBHBEFABABABADAEBABEHAGDGCEABHAFEHHGGGFAEABAFDAIBFGFABDDIADCIABABABCAHGIDIBEIAHEFABDHGEHEHEHBCABIABAIEDAEADABFACCABEEICAEABDAIDEACGAIGGDCAGFBABFABFDEAFAGGHCEHABAIABDAFAEABEGCAHADAEABFEIDFBAHFAIBCAGBEBGAAFFHIIBAFAIHHADABCIDICIAIBAEAHFAEIDCAIBAEEIFHFACBAIABCABABAIHDAFIBIABIABAGGIGABCABAEAIFBABHADDCAFEEEAFAGDEEHBABABHAHDBAIBFDHCCCIDGABFBABCAABABHHEAHABAHBEDBFEBAGHGFABAACHAEABAIFHABHABABCABGHAIACBBHABAIIIGABBADBGHFFFABIAIBDDBGAIEEACCIAFABHABECIIDCAGIDGADHDAECABAEEDIEHAGIGIIEEFABDABCBADCFADADHABHBFCHBABEAEFAFICECABFEFAGIBCIABEABACBAHADABGHADIBGEDEABABEABFAHABFAFHIGIABHDABABABFGGFBAICAHBEIIHDABABAIACEFDABFBDAGGBDABFGAHEGCBABBHAHCBCABIIEADHCAIIIBFFICHEIFAFIAFICAGCABABAFBGBACBBAFCABABABGGCGCGAIAIABFGCGHFABHFACFADIADFFEEABEABIHDGAIGBAGHBEDABABAEEBAHACBDFHAFAFHIAFABABAFACDAGAEDGADICABCFFIABDHAHABEDABACBAIAHDHGBABHADABABICACABGABABACHCDBEADEEFGAIHGABCABCCHAFFIFEBAGACBABHGHAEACBDFEAICADADBAEHDABAGBGAIDABAD"
3

"....AAA....CC...AACCCA..B.....CCB.ABB..A.CA...BAA..A....B...B...........B..C..C.BA....BC....AC.B....C..C.......BB...CC..BA.C.....C..C....CA.BCA..C.ABB.BAAAC.C....A...BC..CCC.B.........BB.BA.CB..B.BB.B.B..B...AB....BACB........CABB.AB.....BC.C..B.B....B.......A..CAAA..CC....BA..B.BACB.....CC...A..C.B....C...ABCC...B.C.B....C.BB..CB.C..CAAC..B.C..A..AA.AB.B....A.BA...A....C.C.A..CA.B..A..B.AAAA..A..CA..CBABBC....CB...B.ABB.......C..AB......CA..A...C.BAC..B...BAA..A.B....B..CCA.ACC.B.C....BAA.......A........A.AA..A.A.B.A.BB..BBBA.AC.AC..CBCC..B.B..BA..BCB...CB.CC.......A...C...BAB.AA.B..B.......B......BBC..A.BBAACA.A.......AB...A.BA.C.B..B......B.B...CC.C..BB..B..C.BB...C....CA.BB....A......C...ABC....A.B.....B.C.A....A..A..ACC....CBB..BB.B..CAC..B.AB.CBB......C....C.A.....CA..AACAAB....CAA...C.A.A..A....B.A..C.ABBBCB...BB.BC.C.B.A.CA.B.CCA.BB.CAC...C....A...CC..B.C.AC.CA.A..AA...C.B.....BC.C.BC.BACB......AB....A....A..BB...A.A.A..A....B...CC.BACCA.A.BB...A.BA.A..B...C.....BB...C..B..B......A.C..C...A.A...A...C........C.....B.....CC.A.B.AB.C.C.CBA...ACBC.C....CBCA..CABB...C.....C..A..A.C..BBB....C..CB..B....A.A..CA...BA....ACABA.B.CAB.A..A.ABCB..C.A..BA.CCA.......A.C.C.BB.AC.A.BCC...CAB..BAABCB.....B.BA.BC...B...C.AB..CA...B.CAA...AB..B....A..AC....CA..A.B.A.AA.A.AA........C..B.CB.AB..AC.........C.......BB.AC.B.A.....A.A..CB...BA...AA..AAB.......AC.....C....C.B....BC.C...A..AA..........B..A...B...A....CCCABAB...BC..AA.C.A.A.B..BCA.A.C..C.BB.BC..A.A.BBCA.AC.CAA....A.BC..A.B.ABC.ACABC..A...........BC.BBACA.CA...CBC....B.ABC..C....C..B...B.A..A...BCCC......C.A...A..C..C...AC.AC.AA....BAA.BACA.B..A.A....A.BCB..AC.CA.B.C..B..A..........CBC.......AB.B..B..CB...B..AC.AB.A....BCCAA.....C..............BA.CAC.B...AC....CA..B......B.B.C.CB...BBA.A.AACC.BAC.A.C.....B...CCAACA.B..CBAB.C.CCB.ACA..C..AA.....AA..A..A.CB..A.....CCCC..C..AB.BAB....C.....B.C.C...B...CC..ACC.C..ABC.....C..B....B..B..C.CA..BCB.AA.C....B...B..C..C...C.A..A..A...BA..BAB...C...C...AA.BBAAAB.A.B...CA.A..CCB..B..C..B..A...B.C...AA.A.BCC.BCBB.C..A.....AC.C.BB.....CC....A......CCBABBC...B...BA..B."

Returns: "ABABAAABABACCABCAACCCABABABABACCBCABBABABCABACBAABCABABABABABABABABABABABABCABCABABABABCABABACABABABCABCABABABABBABACCACBABCABABACABCABABCACBCABACBABBABAAACACABABABACBCABCCCABABABABABABBABABCBACBABBABABACBABCABABACBACBABABABABCABBCABABABABCACACBABABACBABABABCABACAAABACCABACBABABABACBABABACCABCABACABABABCABCABCCABABACABABABCABBABCBACABCAACACBACABABCAABABABABABACBABABABABACACBABACACBABABABCAAAABCABACABACBABBCABABCBABABCABBABABABACABABABABABCABCABABCABACACBABABAABCACBABACBABCCABACCABACABACBAABABABABABABABABCABAABCABACBCACBBACBBBABACBACABCBCCACBABACBABABCBABACBACCABABABCABABCABABABCAACBACBABABABABABABACBBCABACBBAACABABABABABABABCACBABCABACBABABACBABABACCACACBBACBABCABBABACABABCACBBABABABABABACABCABCABABACBABABABACBABABCABCABCACCABABCBBACBBABABCACACBCABACBBABABABCABABCBABABABCABCAACAABABABCAABABCBABABCABABABCABACBABBBCBABABBABCACABCABCACBACCACBBACACABACABABABABCCACBACBACACABABCAABABCABABABABCACABCABACBABABABABABABABABCABABBABCABABABCABABABABACCABACCABACBBABCACBABABABABACABABABBABACACBACBABABABABCABCABCABABABABABCABABABABCABABABABABACCBACBCABACACACBABABACBCACABABCBCABACABBABACABABACABABCABCACBBBABABCABCBACBABABABABACABACBABABCACABACBACABCABCABABCBABCBABABABCCABABABABABCACABBCACBACBCCABACABACBAABCBABABABABACBCABABABACBABABCABACBACAABABABACBABABABCACABABCABCACBCABAABABAABABABABACACBACBCABABACABABABABACABABABABBCACABCABABABABABACBABABABABAABCAABABABABCACABABACABABCABABACBCACABCABCAABABABABABABABABACBABCABABACCCABABABABCABAABCBABACBACBCABABCABCABBABCABABACBBCABACACAABABCACBCABACBCABCBACABCABABABABABABACBCABBACABCABABCBCABACBCABCABCABABCACBABABCABCABACBCCCABABABCBABABABACABCABCACBACBAABABABAACBACACBABABABABCACBCBABACACACBACACBABABABABABABACBCABABABCABABACBABCBABABABACBABCABABABCCAABABABCABABABABABABACBABCACABABCACABABCABABABABACBABACACBABABBABABAACCABACBABCABABABABACCAACACBABCBABACACCBCACABACABAABABABAABCABCABCBABABABABCCCCABCABABABABABABCABABABACACABABABACCABACCACABABCABABACACBABACBACBABCACABABCBCAABCABACBABABABCABCABACBABCABCABACBABABABABACABACABCAACBBAAABCACBABACABABACCBACBABCACBABABACBACABCAABACBCCABCBBACABABABABACACABBABABACCABABABABABACCBABBCABABABABABABA"
3

"C.BA..CB.AB....A.AABBAC.CCB...A.ABCCAB.AB.C..C.A.B..CBB.A.BCB.A.AA.AC.CCB.B.ACBBBBACC.CBAB.BB.C.CBACBABA.A..ABB.AA.B.BAACAC.BBBC..CC.C.ACB..CBBBBBBBAACABCC.CCCAACA.BACA.ABBBCB.CCBAC..BBA.C.B.B.CABC.CBBB..A..B.CBBBBCCBAAAACCCCCB.BAC.AA.BBACCBC.BB.BCBC..CBC..B..BBCC.CBC...B.BAA.A.BC.AACAA.ACCAB.A...AABBAACCB.ACCACAC.CAB.CA....BCCBBCBB.CCCBAC...ABAA.ABB..BB..C....C..CABA.B.B.C.BA...AA..CAC....A.B.B.BB.B...B.BC.ACB.C.CBCAB.BAB...A.C.CA...B.A.AAB.BA.CBB.A.AA.CBBCABBABA.C.CA.ABBAA.CBCABABC.CBB.BB.BAC.ACCABBABB.AB.B.B.CCAC..BAAA...C..C.BBA..B.A...B.CCBA..CABBBACBC..B.CABBCC....C.A..BB.A...CCCB..BC..A...ACBBCCCCBA..AAC.C..A.ABA.AAC.AA.CC..C..CBAC.BBBBCCABCABAB.BC.CAAB..CABAA.A.CBB.AA.C.BCABBB.AC.BCAB.BC..A.A.BCCC....BCCCABCCABABA.ACB..A.AB.ABCCA.BC.CBBC.B.C.AABB...BAAAA.AA.CC.A.ABABA.CC..CBAAABCB.BBACCBCAC.A.CA.ABBABACACB.C.BAAAA.ACCCCA.AB.AA...A..ABACC.C.CAA.CCCA.AAABAC.AAB.ACBBAAABCBBCC.CB.AC.AC.CACAA..B.AAB..BABAA.AAAACC..B.CCCBC.BAACAB...CBABBAA.AB.A.A.CCBB.BCA.B.BC.A.C..CCBA.ACA.CA.AAC...ACA.BA.CA.CBBA.C.BAAC..AB..A.B..BACBC...CCACAABCBCBB.A.BBAB..BBBBABCCA....ABB.C.AAACC..ACB.CB.BA.CBBBA.BC.BBABA....AABC.A.BB..A...CBA.....BBCAA..CCC..BCC.CCBAAACCABCBC.ABB.CB.....A.BC.AC..CCCACABBC.C..A.A.C.AB.BCCAAAAABC.A.BBACB..AA.BBC.CBC.CACBC.BCABBAAABC.BB.BCA...A.AC.CCAAAB...ABB..C.A..B.CBCCACA.A.A.CB.CC..AABCCABC.BAC.BC.B.C..C.CABABCCABABB....ACB.A....B.BB.B.AC.ABACC.AC...ABC.AAA.CB..BCB.CAACB.CAB.C.BBA.CACBB.CCBB..BAAAAACCAC....C..ACCCBB.CCAB.ABC..BAC..B..BB.ABBCC.C.BBCBAABABCB.ABABCB.CBBAAA.B.BCA....B...A..AAB.ABCACB.B.C..CBBBB.BAC..B.CCA.B.CA.C.B..AACA.CCABACABBCCBAABBC.B..A..AC.BCCCAA..AAC.BA..BBA..BB.CBCB.CB...CAC..A.CBCCC.BBAA.ABABBC.B.BACAA.C..ABCCABA.A.A.CBABACC.BCBA.BAAACAB.BBCAA.CAACC...BCCCACC.C.BCCBACBCAC.ABBACBC..CBB.BBAC.BCBABACAAA.BBB.BCB.A.A.B...BB.CCA..B.CBB..BC..A.C.AC....BA.A..BCCBBBCCCC.CACCAACBBB.CBBAACBA.C...B..C..CBACBB.ACCA..CBCC.BBCBCBA..CBCCCABAABAC.AB.BCAC..AABCBC.BA.BCCBC.B..BABBB...AACCCA.CBAAA.CA.ACBABBAAC.AB.BB.A..B..AAAABAB.A.BABC.CBA.C.CCA..ABBABACAA.AACBCAC..A.A.CCC.BBAA.ACCC..AACCBBAC."

Returns: "CABABACBCABABABABAABBACACCBABCABABCCABCABACABCBACBABCBBCACBCBCABAABACACCBABCACBBBBACCACBABABBACACBACBABABABCABBCAACBABAACACABBBCABCCACBACBABCBBBBBBBAACABCCACCCAACACBACABABBBCBACCBACACBBABCABABACABCACBBBABABABACBBBBCCBAAAACCCCCBABACBAACBBACCBCABBABCBCABCBCACBACBBCCACBCABABABAABACBCBAACAABACCABCABABAABBAACCBCACCACACACABACABABABCCBBCBBACCCBACABCABAABABBACBBABCABABCABCABACBABACABABABAABACACABABACBABABBABABABABCBACBACACBCABABABABCABCACABACBCABAABABABCBBCABAABCBBCABBABABCACABABBAABCBCABABCACBBABBABACBACCABBABBCABABABACCACACBAAABABCABCABBABABCABACBACCBABACABBBACBCACBACABBCCABABCBABABBCABABCCCBACBCABABABACBBCCCCBABCAACACABABABABAACBAABCCABCABCBACABBBBCCABCABABABCACAABABCABAABABCBBCAABCABCABBBCACABCABABCABABACBCCCABACBCCCABCCABABABACBABABABCABCCACBCACBBCABACBAABBABABAAAABAABCCBABABABABCCABCBAAABCBABBACCBCACBABCABABBABACACBACABAAAABACCCCABABCAABABABCABACCACACAABCCCABAAABACBAABCACBBAAABCBBCCACBCACBACACACAABABCAABACBABAABAAAACCACBACCCBCABAACABABACBABBAABABCABABCCBBABCACBABCBABCABCCBABACABCABAACABCACACBABCABCBBABCABAACABABABACBACBACBCABACCACAABCBCBBCACBBABACBBBBABCCABABCABBACBAAACCABACBACBABABCBBBACBCABBABABABCAABCBACBBABABABCBABABACBBCAABACCCACBCCACCBAAACCABCBCBABBACBABABCACBCBACABCCCACABBCACABABABCBABABCCAAAAABCBACBBACBABAACBBCACBCACACBCABCABBAAABCABBABCABABABACACCAAABABCABBABCBABABACBCCACABABABCBACCABAABCCABCABACABCABACABCACABABCCABABBABABACBCABABABABBABCACBABACCBACABCABCBAAABCBACBCBACAACBACABACABBABCACBBACCBBACBAAAAACCACABABCABACCCBBACCABCABCACBACACBACBBCABBCCACABBCBAABABCBCABABCBACBBAAACBABCABABABABCABCAABCABCACBABACABCBBBBABACACBACCACBACABCABABAACABCCABACABBCCBAABBCABABABCACABCCCAABCAACABABABBABABBACBCBACBABACACABABCBCCCABBAABABABBCABABACAABCABABCCABABABABCBABACCABCBACBAAACABABBCAABCAACCABABCCCACCACABCCBACBCACBABBACBCABCBBABBACABCBABACAAACBBBABCBCABACBABABBACCABABACBBACBCABABCBACABACBABABABCCBBBCCCCACACCAACBBBACBBAACBABCABABABCABCBACBBCACCABACBCCABBCBCBABACBCCCABAABACBABABCACABAABCBCABACBCCBCABACBABBBABCAACCCABCBAAABCABACBABBAACBABABBCABABABAAAABABCACBABCACBABCACCABCABBABACAABAACBCACABABABCCCABBAABACCCABAACCBBACA"
3

".........A............................A.....................B..AB..CC.........AC....................B....................B......................C.A.........................AA....C.....................................C..................................B.......C...................................A..............CC.................C............C.........................B......B....C....C................................B...B....AA..................A.........B...............B.......C....................B.............................C..A.............B......C.C..............................A..................C.............................A............BA...................................................C....................B...C.............C..................A........ACB...................................C..............C..........A.........A.........C.........................B........................C..A.........................................C...A....A....C....B............C.....A..C.........................A...........B....................B......................................CC..........................A...................C..........A....B...........B......................C...............................................................A......A..............................................A..............A...................C...................A............A...........B...........B.....................A..........................................C..................B....C.......................A.......C........................A....ABB.A....................................B........................................C.......................................C..A.....................C........................................B....B.................................B..A.....................C.........C..................A...C..................A............A.AA.A......B.............................C..A...........A.......C......A........A.AB....C................................A.........AB....C...B..........................................B..A..A..C.............................C.......................C..................A....C.................................A................B...........A....C....................................................................A........"

Returns: "BABABABABABABABABABABABABABABABABABABCABABABABABABABABABABACBABABABCCABABABABCACABABABABABABABABABACBABABABABABABABABABACBABABABABABABABABABABABCBABABABABABABABABABABABABABAABABACABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABABABACBABABABACABABABABABABABABABABABABABABABABABCABABABABABABABACCABABABABABABABABACABABABABABABCABABABABABABABABABABABABABABABACBABABCABABCABABABABABABABABABABABABABABABACBABABABABAABABABABABABABABABCABABABABACBABABABABABABABABABABABACABABABABABABABABABACBABABABABABABABABABABABABABABACABABABABABABABACBABABABCACABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABACBABACABABABABABABACABABABABABABABABABABABABABCACBABABABABABABABABABABABABABABABABABACABABABABABABABCABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABCABCABABCABABACABACBABABABABABABCABABCABACABABABABABABABABABABABABCABABABABABACBABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABCCABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABCABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABCABABABABABABABABABABCABABABABABABABABABCABABABABABABCABABABABABACBABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABACBABABCABABABABABABABABABABABCABABABABCABABABABABABABABABABABABABABCABBCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABACBABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABACABABABABABABABABABABABCABABABABABABABABABABABABABABABCABAABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABCABABABABABABABCABABABABCABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABACBABABCABACABABABABABABABABABABABABABABACABABABABABABABABABABABACABABABABABABABABABABABACABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABCABABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABA"
3

".............................A.........B..........B......................................AC.....C.....A....B.........C..........B..............A.............C............C.A....C.......C...............B............................B.......C.....B.............................C....C.........B.....C............B......C....B......AC.A.....C.....B...............A..............A..............A.......................B...A.........A.............C.....................................................B......B...C...........................................................B..............A................B.....C.........................C...B.B...........................A..................B.................................A................................................................................................................B.......B...............C......B...................................................B...AB..............................B.....BC.......BB................C........A...A..A.............B................B...................................A.............................................A.....................................................A............A........C...B........CC....A...........C.......C..A.........A.........A........A................................................................................................A............................A....AC............B.......C....B.A....................A................AAA.....................................................C......A...............................A.........C................B..................................B.....B..........................................................A..B........................C......................A.......................................................................................A.............A......C.......................................C............B.......................................................CB...............................................AA....B..............C..........................C..................................................B........C....................................C...A..BC..................B.......C........B.................C.....C......B.............C.............B..........................C.B........"

Returns: "BABABABABABABABABABABABABABABABABABABACBABABABABACBABABABABABABABABABABABABABABABABABABABACABABACABABCABABABABABABABACABABABABACBABABABABABABABABABABABABABABCABABABABABABCBABABACABABABACABABABABABABABABABABABABABABABABABABABABABACBABABABACABABABABABABABABABABABABABABABABABACABABCABABABABABABABACABABABABABACBABABABCABACBABABABACBABABABCABABABABABABABABABABCABABABABABABABCABABABABABABABCABABABABABABABABABABABACBABCABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABACABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABACABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABACBABABABCABABABABBABABABABABABABABCABABABABABABABCABABABABABABACBABABABABABABABACBABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABACABABABABABABCCABABABABABABABABCABABABACABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABCABABCACABABABABABACBABABABACABACBCABABABABABABABABABABCABABABABABABABABCAAABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABACBABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABACABABABABABABABABABABABABABABABABABABABACABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABCAABABABABABABABABABABCABABABABABABABABABABABABABCABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABCABABABABABABABABABABABABABABABABABABCABCABABCABABABABABABABABACBABABABACABABABACBABABABABABABABABACABABACABABACBABABABABABABACABABABABABABABABABABABABABABABABABABABABCABABABABAB"
3

"CBC.B.B.CBAC.AABAABC.ACBACCCCC.BBABAB.BCACABCACBA.BBAAABCCA.BAACCBCA.ABCB..CCA.CCCCA.ABAC.CBBABACAAACCC..ABACCCAACCBBCBCABBCCBCCCAC..AC.ABAABCACCBCBBCABABCC.BC.CAA.BC.ACACCBABACABB.AACACCAABC.B.CBACB.C.AB.BCA.ABCABAA.BACABBCCBB.CC.C.BCBABABAACBABABBAAABABACB.ABB.C..A.CACCA.CCB..CC..ABC..B..CCACCA.ABCCCCCBA.BACA.AACCABABCBA.BACA.CBCBA.B.BCACCACAABA.BACCACCCB..ABAC.BBABA.A.BB.BB.ABB.B..BBA.BBC.CACAAB.B.AB.BCCBBC.ACBCBCABAA.AABBCABBBB.ACCACBBC.ACCCA.BBCB.ABBABACCAAA..C...ABCCCB.CCBCAABBAB.BC.ABAAC.ABCACBACCC.BCAACAABA.AAABAABC.B...ACA..CBCABBAAABACCABABBBBCAA.CCAC.C.CBCCABCCBB.BBBC..BB.AAABCA.ACC.CCAAB.BBAACCBCCCA.B.C.ABCB.CCCACACBBBAAAC.C.BCAAAACABA.AACAAABCBCBBB.AACAA.AAABC.BA.ACBCCC.AABBBCCB.BAABACCCBBA.CAA..CC.CBAAB.CAA.BA.ACCB.BCAABBCBCC.CB..AABCA..CBAAA..A.BACCABBBBAACCABBBB.BB.A.BB..B..AAACBBABAC.BAA.BCCBACBAABA.CCCC.BABAB.AAAAA.C...CCCA.BC.BC.AACBBBBBCA.ACA.C..BCBBACBBABCC..B.BCAB.BCBAB....ACBCA.C.ACBCBBA..C.BAB.BC..ABA.BAAACCBBCBBB..ACACBB.ACACABCBC.AAB.BBABCACBBABBBBABABABBAB.ACCBCA.CACBA..C.BCCB.BBBCACABBBCCBAAABAACBAC.ABCCCAC..BCBAABAACAC.AC.CBB..CCA..AABCBBB.A.BCCBACCCAAAA.AACACA.CCAAABBBA.ABBACACBBBBBABAABAACBABAAAACAB.AACAACBACA..CBACACCAACBCACA.BCACBBAACCABA.BB..CCB.BBABBAABBAAAACBCB.BAABBCBCC.A.BCAB.C.BAB.BA.BCA..A.BCCBBBBACAAB.BBAABB.ABBB.CCCAC.B.BCBABBB..A.CAABCCCC.CCBCCB.CBBA.AAAB.BBAABACC.ABCCBABACCBCA..BA.BBACABCAACAAB..CCBABBCAABAABACAA.BAB..BABBAACCA.B.ACC.AABC.BBA.ABBCB.CBBA.ACCAABCBAC.A.BCBC.BBBBCBBBACB.BCBAB.AACCBBCAC.C.BCBCCC..ACC.CACA.ABCBAB..CACCA.BBBB..ABB.AABCC.A.CCAAC..CBCAAA.BA.AAAA.A..ACCBCABBBAB.CAAC.BAC..CC.BCA.B.CBABBABBBCBAACABCAAAC.CCBCBACBACAB.BABABA..CCCCCAC.BCCBCA.BBB..BAAAAAB.AABAABBBA.A..BAACA.BCBAAB..CB.CCAACBBA.B.ACBABACA..A..CBAB..B..AACBAA.BBACAC.ABC.AAB.ABABCCAB.BABBCCCAAACABC.CBCACBCBAAABC.B.CCBCBC.A.BA...BBBAC.CBAACC.CBCA.BCCCC.B..A.BAC.BACA.ACAACBABCC.B.CBACBCCA.BB.ABBC..A.ABABACA.C.A.AAAB.AAC.CA.CCBABCACAABAABBBABAC.AAABABCBAB.A.ACBCABCCBBBABAABBCA.CBBACC.AC.CBBCABAB.ABCCCBAA..CCBBBBABABAAABAA.ACACCAAACC.ACCCAC.AB.CB.ABCC.BAAACAAAA.BBBAABA..CB.ACCBBBCCBCBC.AAACAAABC.A.AA.BAA.C.ACC.BB.BBAAABCAABA.BAB.CBBAC.BBABACCCCCBC..CC.BB.AAABBBCAA.C.CBCC.ABBACA..AAACAAAACABA.BCBABCCCB.C.AC.ABBBACA.ACCACACAC..BBCAABB.ABCCA.C.AAAABBBBB.BACCCB.BBBABCCABC.B.ACBBBA.BCBCCB.A.ACC.CB.CCCBCC.BBBABABC.BBBBBABAABCBAC.BCA.BAC..ACCBAB.A.CAB..CCA...CAAC.BBA.C.B.CCAB..BB.AC.....B.C.BCCCBAAC..A.CCAAB"

Returns: "CBCABABACBACBAABAABCBACBACCCCCABBABABABCACABCACBACBBAAABCCACBAACCBCABABCBABCCABCCCCABABACACBBABACAAACCCABABACCCAACCBBCBCABBCCBCCCACABACBABAABCACCBCBBCABABCCABCACAACBCBACACCBABACABBCAACACCAABCABACBACBACBABABCABABCABAACBACABBCCBBACCACABCBABABAACBABABBAAABABACBCABBACABABCACCABCCBABCCABABCACBABCCACCABABCCCCCBACBACABAACCABABCBACBACABCBCBACBABCACCACAABACBACCACCCBABABACABBABABACBBABBCABBABACBBACBBCACACAABABCABABCCBBCBACBCBCABAABAABBCABBBBCACCACBBCBACCCACBBCBCABBABACCAAABACABCABCCCBACCBCAABBABABCBABAACBABCACBACCCABCAACAABABAAABAABCABABCACABACBCABBAAABACCABABBBBCAABCCACACACBCCABCCBBABBBCACBBCAAABCABACCACCAABABBAACCBCCCACBACBABCBACCCACACBBBAAACACABCAAAACABABAACAAABCBCBBBCAACAABAAABCABABACBCCCBAABBBCCBABAABACCCBBABCAABACCACBAABACAACBABACCBABCAABBCBCCACBABAABCABACBAAABCACBACCABBBBAACCABBBBABBCACBBACBABAAACBBABACABAACBCCBACBAABABCCCCABABABCAAAAABCABACCCACBCABCBAACBBBBBCABACABCACBCBBACBBABCCACBABCABABCBABABABACBCABCBACBCBBABACABABABCABABACBAAACCBBCBBBABACACBBCACACABCBCBAABABBABCACBBABBBBABABABBABCACCBCABCACBABACABCCBABBBCACABBBCCBAAABAACBACBABCCCACACBCBAABAACACBACACBBABCCABCAABCBBBCACBCCBACCCAAAABAACACABCCAAABBBABABBACACBBBBBABAABAACBABAAAACABCAACAACBACABACBACACCAACBCACACBCACBBAACCABACBBABCCBABBABBAABBAAAACBCBABAABBCBCCBACBCABACABABABACBCABCACBCCBBBBACAABABBAABBCABBBACCCACABABCBABBBABABCAABCCCCACCBCCBACBBABAAABABBAABACCBABCCBABACCBCABABACBBACABCAACAABABCCBABBCAABAABACAACBABACBABBAACCACBCACCBAABCABBABABBCBACBBABACCAABCBACBACBCBCABBBBCBBBACBABCBABCAACCBBCACACABCBCCCABACCACACABABCBABABCACCACBBBBABABBCAABCCBABCCAACABCBCAAACBABAAAABABCACCBCABBBABACAACABACABCCABCACBACBABBABBBCBAACABCAAACACCBCBACBACABABABABABACCCCCACABCCBCACBBBACBAAAAABCAABAABBBABABABAACACBCBAABABCBACCAACBBACBCACBABACABCABACBABACBABAACBAACBBACACBABCBAABCABABCCABABABBCCCAAACABCACBCACBCBAAABCABACCBCBCBACBABACBBBACACBAACCACBCACBCCCCABABACBACABACABACAACBABCCABACBACBCCACBBCABBCABABABABACABCBABAAABCAACACABCCBABCACAABAABBBABACBAAABABCBABCABACBCABCCBBBABAABBCABCBBACCBACACBBCABABCABCCCBAABACCBBBBABABAAABAABACACCAAACCBACCCACBABACBCABCCABAAACAAAACBBBAABABACBCACCBBBCCBCBCBAAACAAABCBABAACBAABCBACCABBABBAAABCAABACBABACBBACABBABACCCCCBCABCCABBCAAABBBCAABCACBCCBABBACABCAAACAAAACABACBCBABCCCBACBACBABBBACABACCACACACACBBCAABBCABCCABCBAAAABBBBBABACCCBABBBABCCABCABCACBBBACBCBCCBCABACCACBACCCBCCABBBABABCABBBBBABAABCBACABCACBACABACCBABCABCABABCCABABCAACABBABCABACCABACBBCACABABABACABCCCBAACABABCCAAB"
19

".KJM..PG..C.NRQM.P.L......LD..H..R.I...F.B.CNFD..RRC...BJ.NG..NI..HLL.DN..R..MMPF.I......CN..I..J..I..I.ANL...O..IRE....F.Q...B..L.HH..FE.B...D.Q.OA.C.JB.KDQ..O.C..MGFL.F..F..RGHH.J..D.....Q...B..KP......P.D.JH.JKPE.DD.......G.IJ....B.........KC.H.M.C.PO..J...OG.G.....C..GL.E..FO...IN....O..D...JQ..SKSN.K..A.N..E......FKR.RB.F.GHIL..SR......QF..DQ..C.P....K..K.OM.EKSM.G...C.MA.FNNQJ..EFHF..PHAL.J...........IDH...RMJRJDF....K.O.I.G.......K.K.C..R.S.QI.S.....KNEKE...CF.Q..MJ.J....H..QC.GBDE...C...N.A.B...A.GK...AEE....G....F.Q..M.L.E...SPDK...IB....I.QJA...O..L..D.IGI........M....L....QLFNK........J..H..FMP..BAQPE.O....B.E.B......NJJ....L....CL.G..CGO...B.JC.RSBI.SIMR.LQ...GNJQIHC.O.IJDK..HO.CRP.Q..B.J.RLQ..KMRDC..PEHP.JP.K.....JH.DOCK.PC..E...BA.MN...HI.FMO..A....G..L...IR...R.PI..Q......OIK..F...A..APA..AK..BI..P.AP....J.KE..P.M.ND.L.S.A.QO.Q..HDSKM.ME..D....DBC.G..DL....JEP.....MJ.H.SQ....EP..C..........S.JSNB....DJQ..N.R.RP.RQ.J..A..IJ.PHJ...R..G.CGKNISBA.C....FRL..I.R....O.I.OIMRQI..OH..RL...C....DS.H.F.....II.SONC.HO.S........LHS...N.P.M..H.RJ..N.EI.Q.O.DRD.....J..O..HOQ.........B...........JG..Q..I.MKEG..L..SG..IQ.F.H..L.GF.E.M.D.........S....L.L..FNK.DI.L..GKA.C....F..F.S.C..L..CI......QO.KA....ND....HB..PSLOSOFSPSCH........N.P.IG.KPNRQ..........S.KQR.O...PF...N..S.....D..B.H..QF.F.GKM....R.QHOIQ....CF...PFQ.K....D.RSIC.S.F..H..RM.PIJ...N.Q.GD.D.E.RR..F.N...GC.......CM..FM....H.IQG..J..N..I.....NCR.CQ.....PQ...CI..........D...D.IGO.R..LD.GGL..E..R.HS.FF....FN..B.I.Q.....C...M..B..B..KNQL.N.RI.LA...H....A...HP.ND.QD.RQ......OG...AO.P.N.....R.Q.QALAPKEBNB.JNSGL.GH..I.H.E.S.B.S..KG..KMJ.SQMHR.....FH..K..JFF..HC......AH.P.D.SRCBQR.B...L.L.E.REMFJGO.J..K.D..KE.INK..MMM.Q..OJ..F.....FHH.LG.PNP.QPA.A..H..B.FEO.GQD.JQ.....QF.....M....Q.Q....H..BL..IS.J.Q.NC.K..IQQ.Q.BH..BNNA.AOO....HJD..BEQQ..PL.MQE.O.FE.JP....SPSDK.....K......ARK..EGMH.RESALJ..I....FGF.K....I..RO..RLI..E.L....GCOLBK.J....FE..O..OKSH...K...ACCFQBI.O...FS.G..HER.L..Q.K.RH..C.........BB.B....AR.K...AA..A..HR...JJ.G.I.JLF....ID.MP.O.NBEDM.E.ME..S.F.FDR...H...H.A.IJ.DM.N.....LB..KCML.D......H..RJ.R.RLN...E..H.R...J.O.H.....G..N.LN..JR..D..R.....F...FNSR.........LEJ.CSGH.LA.N.FS.....MRO...PE.K....E.PS.F...P.QO.O.....SCGEKJ.AE.......A.....N.KM.N.B...E.H.DAB."

Returns: "AKJMABPGABCANRQMAPALABABABLDABHABRAIABAFABACNFDABRRCABABJANGABNIABHLLADNABRABMMPFAIABABABCNABIABJABIABIBANLABAOABIREABABFAQABABABLAHHABFEABABADAQAOABCAJBAKDQABOACABMGFLAFABFABRGHHAJABDABABAQABABABKPABABABPADAJHAJKPEADDABABABAGAIJABACBABABABABAKCAHAMACAPOABJABAOGAGABABACABGLAEABFOABAINABABOABDABAJQABSKSNAKABABNABEABABABFKRARBAFAGHILABSRABABABQFABDQABCAPABABKABKAOMAEKSMAGABACAMABFNNQJABEFHFABPHALAJABABABABABAIDHABARMJRJDFABABKAOAIAGABABABAKAKACABRASAQIASABABAKNEKEABACFAQABMJAJABABHABQCAGBDEABACABANBACBABCABGKABCAEEABABGABABFAQABMALAEABASPDKABAIBABABIAQJABABOABLABDAIGIABABABABMABABLABABQLFNKABABABABJABHABFMPACBAQPEAOABACBAEABABABABNJJABABLABABCLAGABCGOABABAJCARSBIASIMRALQABAGNJQIHCAOAIJDKABHOACRPAQACBAJARLQABKMRDCABPEHPAJPAKABABAJHADOCKAPCABEABABABMNABAHIAFMOABABABAGABLABAIRABARAPIABQABABABOIKABFABCABCAPABCAKACBIABPBAPABABJAKEABPAMANDALASBABQOAQABHDSKMAMEABDABABDBCAGABDLABABJEPABABAMJAHASQABABEPABCABABABABABSAJSNBABABDJQABNARARPARQAJABABAIJAPHJABARABGACGKNISBABCABABFRLABIARABABOAIAOIMRQIABOHABRLABACABABDSAHAFABABAIIASONCAHOASABABABABLHSABANAPAMABHARJABNAEIAQAOADRDABABAJABOABHOQABABABABABABABABABABAJGABQABIAMKEGABLABSGABIQAFAHABLAGFAEAMADABABABABASABABLALABFNKADIALABGKABCABABFABFASACABLABCIABABABQOAKABABANDABABHBABPSLOSOFSPSCHABABABABNAPAIGAKPNRQABABABABABSAKQRAOABAPFABANABSABABADACBAHABQFAFAGKMABABRAQHOIQABABCFABAPFQAKABABDARSICASAFABHABRMAPIJABANAQAGDADAEARRABFANABAGCABABABACMABFMABABHAIQGABJABNABIABABANCRACQABABAPQABACIABABABABABDABADAIGOARABLDAGGLABEABRAHSAFFABABFNACBAIAQABABACABAMACBACBABKNQLANARIALABABHABABABABHPANDAQDARQABABABOGABCAOAPANABABARAQAQALAPKEBNBAJNSGLAGHABIAHAEASABASABKGABKMJASQMHRABABAFHABKABJFFABHCABABABAHAPADASRCBQRABABALALAEAREMFJGOAJABKADABKEAINKABMMMAQABOJABFABABAFHHALGAPNPAQPABABAHACBAFEOAGQDAJQABABAQFABABAMABABQAQABABHACBLABISAJAQANCAKABIQQAQABHACBNNABAOOABABHJDACBEQQABPLAMQEAOAFEAJPABABSPSDKABABAKABABABARKABEGMHARESALJABIABABFGFAKABABIABROABRLIABEALABABGCOLBKAJABABFEABOABOKSHABAKABCACCFQBIAOABAFSAGABHERALABQAKARHABCABABABABABBABABABARAKABCAABCABAHRABAJJAGAIAJLFABABIDAMPAOANBEDMAEAMEABSAFAFDRABAHABAHBABIJADMANABABALBABKCMLADABABABHABRJARARLNABAEABHARABAJAOAHABABAGABNALNABJRABDABRABABAFABAFNSRABABABABALEJACSGHALABNAFSABABAMROABAPEAKABABEAPSAFABAPAQOAOABABASCGEKJBAEABABABCABABABNAKMANABABAEAHADABA"
12

"F.BEJIGJ.KHBF.AB.F.HC.AA.IEBIEFEICFFHHBHBELL..JJBKBIHFJEHIIC.GAAJG.CCJKEDA.FICLLHLFCJIHBLI.CJCDCFAFELCHJGFAGGD.H.HJCFKJLKA.HKIDJ..EI.IGDBGALDC.DDLG.CLALCLAJDJELFDEFBID.GGABDGBDHKJEA..ICHAGJJ.DCDBBCLHBFC.BIKLHADELEIICLLIEEDB.AFAD.KG.A.DBED.I..A..GAEJIKECDKLFBJAEIHKFHDFCBJ.CEFBBDJBIAKEBDCEKLF.IKLIHHCKDCHEDIGLABDHDH.FKLDH..BD.J.HGDBCFC.EBFCDGDD.ELH.DKC.FKIBHLHKJ.ABGF..IBHICGFHABGDHHB..KCEEFJGG.DIJLJLCGEALJCEAJDDJG.EIK.KIHCJIIHLECGHC.CFCFFCDADHDBCKECI.FLJALCEHHIAFE.CFHDE.CDLDCCHBLLC.FDEH.FIJEE.FIELFLJDHLHBBJDGJHB.IF.JCL.CHJHCELBFBGH..CDE.DH.CAKKLEGJFGF.K..FIK..AIHJBGJKLG.FJDH.EBLBILFLJJ.CHFBFJFGJCEHIA.AALHA..FCHJEI.AE.FJA.D.JKBFHDJJBFCELB.G.IEA.HG.ILBIBFHB.AGHEDCDJ.IC.C.CDGLC.FBIDDJ.GDKLLE.CDAA.KJ.LGCEGBAFIFJB.FBIJFCCGHFCHHLFC.FDFKDDJGGBHCHC.JBLDGAJHIGFBH.DGLKHBLCBAAGBJCAIDF.GDKJG..JKGD.DHIGGAF.I.FBJAICHCA.DHHI.CGCFBHH.C.CKCKKIBHDGK.LBEK.FBIFAFELGHICKGBAGEBKH..ELKLBHI.HE.JB..DA.HHCFFDFCLHFFHALEHGFL.BAKJG.DFC.H.H.B..LHBHLJHDFIKIJL.CDA.JILHDLKEAAEIIB.LB.FCHLII.E.D.F.AGEEB.IIEJL.BGAEGLBCCKBCAC.J.ICJICIDIB.HCCIIIECGAKGKGECEBLIFKCD.FABEHFDLLLGD.CD.FFLHD.DKD.KE.GLJ.HF.J.HHKEDKE.I.A.EKF.CA..GL.KCFDLDG.JFFKK.DD.KJDJGKH.BEAJKJLK.JD.HBE..JFCDB.G.BELFCILLICEHKLGCKGEIA.EJFLLIF.DKGGCBAJFCBKBEDCDLGL..G.IDBAJKDEJEBJ.BHKEKDJFKHJECDGHDGH.IHFD.D..GGLCCJGIFJICHCCILEDCE..JFHGB.FGLJGHA.FG.DGIHJ.JJBBGFF.FFFGG.BGIACHGKAGFE.HFHIK.EFFKFGAELHICIHJDCL.JHDAJJCFFAJBKBKEJL.ACH.LECDAGBC.AA.F..JHEFEJHEHGI.KADIEJLDHJJEGDL.GEBAGIHEDIH.HHBGGL.BKJK.A.L.HD..ELCGBIHEII.I..EBBFKCHJFLCHIHCILEA.IK.AKKAKFLKEDE.JGKAHLDC.DFFF...JHDELFGGDGAJ.IBHIB.CEDIBGKFKF..LBGHHKC.JLCKHJ..L..CGAHAHGDK.JBLHGKJIDEDBIELCBB..EDJKL.CCBJACDHJG.BL.CCDCCJB.ADC.LKKLII.HJ.ABJGJHFLHEBJLEHIBA.HKIDCBIKHFCGLFHF.JJ.ADLHIBACBIDF.HKH.DDGBHLLE.HKJGAJHKJHBFKJC..AF.EDABFCCDHHDEGIIGJE.DDADI.C.LDEEAHCBFF.ELI.BFKDB.HHE..E.CKCFJ.C.ELHLI.IAHKHFADLEHLJFECLILK.F.ID.GK.J.IDJICIAGCIGLBEFB.GBLIHA.LIEHIGJHIA..L.DCJJFLFHA.IJEBAL.HE.DC.FA.DJGDAEKF.EHDII.DEIHAJDH.AG.DGAD.DBGLKDHEG.FA.CGGBDK.GCDDFHIAJKEGKBLHKHFH.CBILIECJGABILDFE.BBEKKHCIJBFEJJJHKCHDHBHCFEAF...LDC.IIIGAI..BBCHHGB.BJABLKDHAADDCI.ICKDDL.DFKJBKICKCEDDC.C.KG.F.BGBDC.GKJHLGFCHBHKF.IBDJLKGGBKBJBBFCIABAI.HHLJJCCEKB.DIED.HAK..IJHAL.KHJDCLA..DE.FIBKDEGKJIJGJKJGIICDJCDHEJFHGEAIJBHIHLK.EIHBC.BAHLFEKB.BCFCFHDLLKEAIIH..LDL.AHB.JB.ADLJJLBJFGII..I.KHHGBL..B.CHBBCIGDBA.ECIDL.HCLGE.E.K.FAJ..ILFDDHEE.KKGEAAEAGGCIL.DC...I.JHAFHIDIICJH.CCJG.AEKGALH.AHKEFIHKEKLAEGLCDHBKBFCCCLBCJDILFBGGJL.HBG.GEG.GBCEDJDHL"

Returns: "FABEJIGJAKHBFBABAFAHCBAABIEBIEFEICFFHHBHBELLABJJBKBIHFJEHIICAGAAJGACCJKEDABFICLLHLFCJIHBLIACJCDCFAFELCHJGFAGGDAHAHJCFKJLKABHKIDJABEIAIGDBGALDCADDLGACLALCLAJDJELFDEFBIDAGGABDGBDHKJEABAICHAGJJADCDBBCLHBFCABIKLHADELEIICLLIEEDBCAFADAKGBABDBEDAIABABAGAEJIKECDKLFBJAEIHKFHDFCBJACEFBBDJBIAKEBDCEKLFAIKLIHHCKDCHEDIGLABDHDHAFKLDHACBDAJAHGDBCFCAEBFCDGDDAELHADKCAFKIBHLHKJBABGFABIBHICGFHABGDHHBABKCEEFJGGADIJLJLCGEALJCEAJDDJGAEIKAKIHCJIIHLECGHCACFCFFCDADHDBCKECIAFLJALCEHHIAFEACFHDEACDLDCCHBLLCAFDEHAFIJEEAFIELFLJDHLHBBJDGJHBAIFAJCLACHJHCELBFBGHABCDEADHACAKKLEGJFGFAKABFIKABAIHJBGJKLGAFJDHAEBLBILFLJJACHFBFJFGJCEHIABAALHABAFCHJEIBAEAFJABDAJKBFHDJJBFCELBAGAIEABHGAILBIBFHBCAGHEDCDJAICACACDGLCAFBIDDJAGDKLLEACDAABKJALGCEGBAFIFJBAFBIJFCCGHFCHHLFCAFDFKDDJGGBHCHCAJBLDGAJHIGFBHADGLKHBLCBAAGBJCAIDFAGDKJGABJKGDADHIGGAFAIAFBJAICHCABDHHIACGCFBHHACACKCKKIBHDGKALBEKAFBIFAFELGHICKGBAGEBKHABELKLBHIAHEAJBABDABHHCFFDFCLHFFHALEHGFLABAKJGADFCAHAHABABLHBHLJHDFIKIJLACDABJILHDLKEAAEIIBALBAFCHLIIAEADAFBAGEEBAIIEJLABGAEGLBCCKBCACAJAICJICIDIBAHCCIIIECGAKGKGECEBLIFKCDAFABEHFDLLLGDACDAFFLHDADKDAKEAGLJAHFAJAHHKEDKEAIBABEKFACABAGLAKCFDLDGAJFFKKADDAKJDJGKHABEAJKJLKAJDAHBEABJFCDBAGABELFCILLICEHKLGCKGEIABEJFLLIFADKGGCBAJFCBKBEDCDLGLABGAIDBAJKDEJEBJABHKEKDJFKHJECDGHDGHAIHFDADABGGLCCJGIFJICHCCILEDCEABJFHGBAFGLJGHABFGADGIHJAJJBBGFFAFFFGGABGIACHGKAGFEAHFHIKAEFFKFGAELHICIHJDCLAJHDAJJCFFAJBKBKEJLBACHALECDAGBCBAABFABJHEFEJHEHGIAKADIEJLDHJJEGDLAGEBAGIHEDIHAHHBGGLABKJKBABLAHDABELCGBIHEIIAIABEBBFKCHJFLCHIHCILEABIKBAKKAKFLKEDEAJGKAHLDCADFFFABAJHDELFGGDGAJAIBHIBACEDIBGKFKFABLBGHHKCAJLCKHJABLABCGAHAHGDKAJBLHGKJIDEDBIELCBBABEDJKLACCBJACDHJGABLACCDCCJBCADCALKKLIIAHJBABJGJHFLHEBJLEHIBABHKIDCBIKHFCGLFHFAJJBADLHIBACBIDFAHKHADDGBHLLEAHKJGAJHKJHBFKJCABAFAEDABFCCDHHDEGIIGJEADDADIACALDEEAHCBFFAELIABFKDBAHHEABEACKCFJACAELHLIAIAHKHFADLEHLJFECLILKAFAIDAGKAJAIDJICIAGCIGLBEFBAGBLIHABLIEHIGJHIABALADCJJFLFHABIJEBALAHEADCAFABDJGDAEKFAEHDIIADEIHAJDHBAGADGADADBGLKDHEGAFABCGGBDKAGCDDFHIAJKEGKBLHKHFHACBILIECJGABILDFEABBEKKHCIJBFEJJJHKCHDHBHCFEAFABALDCAIIIGAIACBBCHHGBABJABLKDHAADDCIAICKDDLADFKJBKICKCEDDCACAKGAFABGBDCAGKJHLGFCHBHKFAIBDJLKGGBKBJBBFCIABAIAHHLJJCCEKBADIEDAHAKABIJHALAKHJDCLABADEAFIBKDEGKJIJGJKJGIICDJCDHEJFHGEAIJBHIHLKAEIHBCABAHLFEKBABCFCFHDLLKEAIIHABLDLBAHBAJBCADLJJLBJFGIIABIAKHHGBLACBACHBBCIGDBABECIDLAHCLGEAEAKAFAJABILFDDHEEAKKGEAAEAGGCILADCABAIAJHAFHIDIICJHACCJGBAEKGALHBAHKEFIHKEKLAEGLCDHBKBFCCCLBCJDILFBGGJLAHBGAGEGAGBCEDJDHL"
21

"..T.NIK.BA.FUTF.USUTI....GQ.A.KN.ONJFNROKHAFFQITIEG..FB.K.MTG..DH...OD..NFHOK.CTMPKEGDAO.F.KO.QT.JTOEDBT..FA.IKGNQ..B.KNN.FITRBUKSJH..JBU.TUL.ANU..U.L.LAMGMF.UQ.RR.JQ.R..G.Q.Q..OPRI.DL.O.FIPI.LR..PCQTFC..QMSI.NBETCTE..C.QHEDPFG.ENBJSJ.PR.HGCKO.H.O.TKBOPTTQ.N..ELMQQMPC...ULT.IAN..LKCE.IQPCDLAIOJ.G.C.J.G.ORKQIAF.M.EN.PAQUL.TAJQMA.JIN.CPOTC.N.KJU..MSJFT.HT.U.EJECI..L...PQL...PBOO.K.HHL.G..GD.PIEI.H..DISKDSES..NB..DE.RB..ILFDC..FMP..KEJOUO..K.GT.KB..IK..TJK.OB..LJEBTI...TUD.EEUG...DLD.UCEQIHG....NC.H.DKC..T..CM.OLNM.QHBULS.TBAOLS.UAGDQUSR.EARBR.NS.RUUR.PEIC..IMHPQ..TS.SAE.FT....S.GAJ.BN..LMCMS.DIMCGK..M.ESBBNS.HS..T.T.STUNSNDLLOOG.JF..PE.RMCCC.QBGHQGROKAUNKGNEGE..DCP..K..SH.DF.ADLT.A.TMCH.UBKJB...MRIR.G..B.OM.Q.NMDDIRJ..TIN.GEQO.I.IQ.L...LN..ACC.MTD.JRSL.D.CKG.TR.Q.EAUHOBFPPQJ.G..MNHDTOCGBU.EKUUODCNPBE.GQPLLK.N..G.HE..L.OSBE.HP.GADT.SOQNM.T.G.KKKF.SQIQ...R.I..JNK..S...TIJ.FTCS.FQEBTEOMG.EDL.PL.QQ.UAOCTEB.RTF.GMD..PFDLOJ.GK.C.K.LJPRD..J.IK.SS.JASB.B.JU..IR..B.OGI.EJDJTH..DF.SK..NNS..F..P.Q.LPMKMGAU.H..QQQSCU.ERNLA.LCSKTMH..T.K.TK.O.H.KJNA...THDC.JGB...FS.QC.T.N.G.I..ATQ..I...CKP.N.FOK..GOF.RPM..DM.O.NM.FI.CLCCFM...NNB..E.KCTQG.BBO....PM.CDIULU.JOGBAJKPK.N.M.NSUORT.EQLPOEIO...GIOQ.JJTKPIUK..THLDBOM.A.OKLABUEU.P..UJ..MNK.KBBMLLS.KI.HU.NT.OALGFBRMBDB.RNHIHF.H.EHBG...ABDHFC.QRJD..JBD.O..RDIGIQC.M.JAL...TE..QQOHTO.N.KO.MDSPGOMT.N.EQUOANBL..PKO.M....MUC.K...F.T.O.F.HOBB.DFGHCP.A.BH.U.KASME.NNR...BD..ECQ.EA.KEJ...DF.GAFR...TDO...RG.I....OPASK.EOSUACSRKF.C.G.GLIALS..QODCRAM..KDTIN.C..B.H.C.KDEKFT...EM.GIPQACSU..UQCC..LF....M.ONE.JTBQHBDQTNDBREA.A.NNQUFL.F.HKIAKCDKQ...D..HD.NDKUH.OJ..Q..MS...NQBHAKS.MS.NPMC.ONBOGIPBQIEFOG.F.QO.P.PHC.G...OD.OL.OUJOCOOC..CQ.E.S.LQS..EH.PUAG.BF.G.PME..K..OQ.DHESKIS.DPE.OL..TSB..H.JSP.PG.E.K.I.F.LHOPG.SBO......SKNSQRH..CPHT.UD.BEO.FC.P.Q.I...GPA.LKPBBCSQH..BH.JLJ.MI.J.GRCCAHU.QF.CFPP..HS.N.O..TMOC.PLHC.II.SQ.U.MI.UHME.FISHEE.OJNUKOIC.LBRHM.LG.USJBNSH.ERE.RS.S.AC.IGJD.ADPMC..E..F.BJDQHC.GD..R.G.A.I..BDRT.D.QB.CPC.C.NQ.GFM.S...LLF.KN...OBRDLUNLDBT..L.QCOLRH.S..M.KFH..COMJG...K.HI..T.E.P.AA..T..R.NTIJJ....UJE..KA.TFH.RM..EBHRM.ITAJ.S.CI.TFJBN.DODKBS...U.BT..G...O..NULOEKKLES..BS.GHBP.C.GS.HPN.UD.DBSQ.SAHL..UCLUBJHF.S....A.OR.UOJFB.BQN..Q..IRHM...N..C..K.I.....BN...H..UKJTCKHU.RIQN.U...NLQ.K.SF.P.BNBNSU.TTJ.HFI..DB...LJ..G..T.KFKMTEH..LT.F.F...CQK.MMPGN.GRQEE.K..BL.QTDDREBAAN..QK.KO.KLGU.I..TKF.I..AERP..KNBI..DI..JBLA.KNPSFK.LKM.J.T.U..PQPQ..AU.QGHT."

Returns: "BATANIKABABFUTFAUSUTIABABGQBABKNAONJFNROKHAFFQITIEGABFBAKAMTGABDHABAODABNFHOKACTMPKEGDAOAFAKOAQTAJTOEDBTABFABIKGNQACBAKNNAFITRBUKSJHABJBUATULBANUABUALALAMGMFAUQARRAJQARABGAQAQABOPRIADLAOAFIPIALRABPCQTFCABQMSIANBETCTEABCAQHEDPFGAENBJSJAPRAHGCKOAHAOATKBOPTTQANABELMQQMPCABAULTAIANABLKCEAIQPCDLAIOJAGACAJAGAORKQIAFAMAENAPAQULATAJQMABJINACPOTCANAKJUABMSJFTAHTAUAEJECIABLABAPQLABAPBOOAKAHHLAGABGDAPIEIAHABDISKDSESABNBABDEARBABILFDCABFMPABKEJOUOABKAGTAKBABIKABTJKAOBABLJEBTIABATUDAEEUGABADLDAUCEQIHGABABNCAHADKCABTABCMAOLNMAQHBULSATBAOLSAUAGDQUSRAEARBRANSARUURAPEICABIMHPQABTSASAEAFTABABSAGAJABNABLMCMSADIMCGKABMAESBBNSAHSABTATASTUNSNDLLOOGAJFABPEARMCCCAQBGHQGROKAUNKGNEGEABDCPABKABSHADFBADLTBABTMCHAUBKJBABAMRIRAGACBAOMAQANMDDIRJABTINAGEQOAIAIQALABALNABACCAMTDAJRSLADACKGATRAQAEAUHOBFPPQJAGABMNHDTOCGBUAEKUUODCNPBEAGQPLLKANABGAHEABLAOSBEAHPAGADTASOQNMATAGAKKKFASQIQABARAIABJNKABSABATIJAFTCSAFQEBTEOMGAEDLAPLAQQAUAOCTEBARTFAGMDABPFDLOJAGKACAKALJPRDABJAIKASSAJASBABAJUABIRACBAOGIAEJDJTHABDFASKABNNSABFABPAQALPMKMGAUAHABQQQSCUAERNLABLCSKTMHABTAKATKAOAHAKJNABABTHDCAJGBABAFSAQCATANAGAIABATQABIABACKPANAFOKABGOFARPMABDMAOANMAFIACLCCFMABANNBABEAKCTQGABBOABABPMACDIULUAJOGBAJKPKANAMANSUORTAEQLPOEIOABAGIOQAJJTKPIUKABTHLDBOMBABOKLABUEUAPABUJABMNKAKBBMLLSAKIAHUANTAOALGFBRMBDBARNHIHFAHAEHBGABCABDHFCAQRJDABJBDAOABRDIGIQCAMAJALABATEABQQOHTOANAKOAMDSPGOMTANAEQUOANBLABPKOAMABABMUCAKABAFATAOAFAHOBBADFGHCPBACBHAUAKASMEANNRABABDABECQAEABKEJABADFAGAFRABATDOABARGAIABABOPASKAEOSUACSRKFACAGAGLIALSABQODCRAMABKDTINACACBAHACAKDEKFTABAEMAGIPQACSUABUQCCABLFABABMAONEAJTBQHBDQTNDBREABABNNQUFLAFAHKIAKCDKQABADABHDANDKUHAOJABQABMSABANQBHAKSAMSANPMCAONBOGIPBQIEFOGAFAQOAPAPHCAGABAODAOLAOUJOCOOCABCQAEASALQSABEHAPUAGABFAGAPMEABKABOQADHESKISADPEAOLABTSBABHAJSPAPGAEAKAIAFALHOPGASBOABABABSKNSQRHABCPHTAUDABEOAFCAPAQAIABAGPABLKPBBCSQHACBHAJLJAMIAJAGRCCAHUAQFACFPPABHSANAOABTMOCAPLHCAIIASQAUAMIAUHMEAFISHEEAOJNUKOICALBRHMALGAUSJBNSHAEREARSASBACAIGJDBADPMCABEABFABJDQHCAGDABRAGBABIACBDRTADAQBACPCACANQAGFMASABALLFAKNABAOBRDLUNLDBTABLAQCOLRHASABMAKFHABCOMJGABAKAHIABTAEAPBAABATABRANTIJJABABUJEABKABTFHARMABEBHRMAITAJASACIATFJBNADODKBSABAUABTABGABAOABNULOEKKLESACBSAGHBPACAGSAHPNAUDADBSQASAHLABUCLUBJHFASABABABORAUOJFBABQNABQABIRHMABANABCABKAIABABABNABAHABUKJTCKHUARIQNAUABANLQAKASFAPABNBNSUATTJAHFIABDBABALJABGABTAKFKMTEHABLTAFAFABACQKAMMPGNAGRQEEAKACBLAQTDDREBAANABQKAKOAKLGUAIABTKFAIABAERPABKNBIABDIABJBLABKNPSFKALKMAJATAUABPQPQABAUAQGHTA"
3

"BCC.C..C.B..BABACC...CAB.B.BB.A.C.BBBBBBA.BB.C.CCC.CB..BA..CBAA.A..ACB.BBB...C...C..AB.ABCBAAB..AAABBBA.AB.CBA.CA..ABBB.BCAACCBBA.CCABB.C.A.CB.AA..C.AA.C.BCC.BABCCA.BB.AAAAABA....ACB...AABB.BAC.CC.ABAB..AC.ACCCABCAB..CCBB.B..AC.BABBBC.ACBCCB..ABCABB.ACBCA...AACABAB.A.BBC.C.C...A.C.B.CAB.A.A.BAC.B.BB.AC.BABCCCC.CAA.CAA.AB..BBBB.B....A..AC.BB.A.CCCABAA.A.CBB.A.C.BCBB..CABC.A.AC.A.A.C.A.C..BB..CA.A.C...AA..BABCA.CABA..C..AA..AAC.BAABB.A.AA.....A.B.A.ACCC.AC...CC.CA..C.AAC..BABACA..BCBACA.CAB..AA..CB...BBA.C.BCACCBCC..CCA.A.A.ABBCCCBA.BCBABBA.BABCC.BC.BC.BA.CBB.BCCABACCAACBCABBABABAA.ACC.AB..AABABBCB..AC.AACCCCCBCA....ABB.ACC...A.C.A.CA...CA.CB.B.CB.CB.A..BCBC.BB..AA.AB.CAB.ABBAA.ACC.C.AC.BB...AB.CBAB.BA.CABCA.A.BBA..B.AA..BCABBACABCCCB...A.CBB..AC.B.C.B..BACCBAABB.AC.CABA....CA...BB.AA.CB.CABCBABAA.B..A.C..B.CCBA..A.AC.BA.AAA.CBC..C..BABC.BBB.BCAACACBC.BA..B.CBC..AA.AB.....CC..ACCAA.CAA..AC..A...B.BABBCCBAB.CBB.BBC.CBBCAAAB.B.CB.C.CBA.A.A.BA...ABCACABCBA.AC...BABACBCB...C.CB.ACCB.ABCA.ABABC.BCC...BBCAC.AAA.AABBB.C..BBC.ABB...B..A.AB.CBCC..BBB.BBC..C.ACBA.BBC.BCC.C..A.CC....CABACAC.BC.BAC..BBBCAAAA..AC.B.BBC..ABBBAAA.AA.CBBC..CCBBAAC..CAB.BABCACBAABB.C.AA.B.BACABCAA.CBACBC..ABCBABBAABBBC...A.B..B..CABCB.B.C..B.AABBBAAA.A.BABBBCBCCCCB.AB.C...C.AA..BA..CAA.ABCA.BAC..A.B.C.AB.A.B..BCBBCB..B.B.CACACAB.C.BB.ABBBAB.CA.CC.CCBAC.CA...B.BCCB..B.C..CAACCA.ACCBCCCCBA.CC.BBAB.A.AB..C..CB.C.C.A.C..ABBB..C.ABABB.BABCBBB.A....ABA.ACBACAAAAAA..ACABAB.BA.BAB..BBC....BCCABCCBA.AABCA..AABBBABC.B..B.ACB.BCCCB..CA..ABAB...CAABABAB..BABBB.C...BCCC...A.A.BA...BB.CAA..AABCC.AC.A....BA...BCCB..CCA..A..BA.CBBCC..CB..CCC.....AC..B..AA.B..BA..BB.B.BB.CA.ACA.CBBC.CBCACAABAC..BA.ACBCB.....BACAAB.CB.CA.ABCC..CCA..B..CC.A...AAAA...CAABAACCCB.A.B.AA.CAC.CA.ABBCCAC.CC..B.CA..CAB...B.B..ACA.A.B.CBBB.BBC.CB..BA.ABACBAACB...AC.BCAA.BABBA.BBCBABB..C.CB..ACAB.C.B.CA..CBBB..CACBCBB.CCABB.BACC..BACBBC.C....CBACBA.ACAA....C.BB.C.BCB..C.BCCBA..A.BB..B..C...AACACBBCB.C...A..CCC.BB....CABA..ACB..AB..BAABB.BBAA.BBBABCB.CCBBB....AABB.AC...AACA...BCA.CAB.BA.BA..C.BCBC.C.CCBBBABCBABA..BBCCACCCCCCA.ABBCCBCCAC.AA..CB.A..C...A.C.B...AAC...B.....C.ACAAA.BA.ABBCA..B....AAACC...A..A.B..BC......BAC.B.CCAB..C.BC.C.BBBA..A.ABBCBBAA.BBA.CBB..B.AC.C..AAB..CCB.CA..C.AABA.BB...A..ACACB...C.BCC..AA.BC.A..C..C.ACCCCC.ABAACBAAB.AA.B..AB.C..BC.B.CAB.A.B.CAA.ACBAA....AB..CBCC.BBCABA.CCA.C.AABC.CAC.C.B.CB.AA.BCB..CBB...ACAB...B.A..BBB...B..A..BA...AAAC."

Returns: "BCCACABCABACBABACCABACABABABBCABCABBBBBBACBBACACCCACBACBABACBAABABCACBABBBABACABACABABCABCBAABABAAABBBABABACBABCABCABBBABCAACCBBABCCABBACBABCBCAABACBAABCABCCABABCCACBBCAAAAABABABCACBABCAABBABACACCBABABABACBACCCABCABABCCBBABABACABABBBCBACBCCBABABCABBCACBCABABAACABABCACBBCACACABCABCABACABCABACBACABABBCACABABCCCCACAABCAABABACBBBBABABABABCACABBCABCCCABAABABCBBCABCABCBBABCABCBABACBABABCBABCACBBABCABABCABCAABABABCABCABABACABAABCAACABAABBCABAABABABACBCABACCCBACABACCACABACBAACACBABACABABCBACABCABABAABACBABABBABCABCACCBCCABCCABABABABBCCCBACBCBABBACBABCCABCABCABABCBBABCCABACCAACBCABBABABAABACCBABABAABABBCBABACBAACCCCCBCABABCABBCACCABCABCBABCABABCABCBABACBACBCABABCBCABBABAABABACABCABBAABACCACBACABBABCABACBABABABCABCABACBBABABCAABABCABBACABCCCBABCABCBBABACABACABACBACCBAABBCACACABABABACABACBBCAABCBACABCBABAACBABABCACBACCBABCABACABABAAABCBCABCACBABCABBBABCAACACBCABABABACBCABAABABABABACCABACCAABCAABCACABABACBABABBCCBABACBBABBCACBBCAAABABACBACACBABABACBABABABCACABCBABACABABABACBCBABACACBCACCBCABCABABABCABCCABABBCACBAAABAABBBACACBBCBABBABABABABABACBCCACBBBABBCABCBACBACBBCABCCACABABCCABABCABACACABCABACACBBBCAAAABCACABABBCABABBBAAABAABCBBCABCCBBAACABCABABABCACBAABBACBAACBABACABCAABCBACBCABABCBABBAABBBCABCACBACBABCABCBABACACBCAABBBAAABACBABBBCBCCCCBCABACABACBAABABABACAABABCACBACABACBACBABCACBACBCBBCBACBABACACACABACABBCABBBABACABCCACCBACACABACBABCCBACBACABCAACCABACCBCCCCBABCCABBABCABABABCABCBACACBABCABABBBABCBABABBABABCBBBCABABCABABACBACAAAAAABCACABABABACBABACBBCABACBCCABCCBABAABCABCAABBBABCABACBCACBABCCCBABCABCABABABACAABABABACBABBBACABABCCCABCABACBABACBBACAABCAABCCBACBABABABABACBCCBABCCABCABABABCBBCCABCBABCCCABABCACACBABAACBACBABABBABABBACABACABCBBCACBCACAABACACBABACBCBABABABACAABACBACABABCCABCCABABABCCBABABAAAABABCAABAACCCBCACBCAABCACACABABBCCACACCACBACABACABABABABABACABACBACBBBABBCACBACBABABACBAACBABCACABCAACBABBACBBCBABBABCACBABACABACABACABACBBBABCACBCBBACCABBABACCACBACBBCACABABCBACBABACAABABACABBACABCBABCABCCBABCACBBACBABCABCAACACBBCBACABCABACCCABBABABCABABCACBABABACBAABBABBAACBBBABCBACCBBBABABAABBCACABCAACABACBCABCABABACBABACABCBCACACCBBBABCBABABABBCCACCCCCCABABBCCBCCACBAABACBCABACABCABCABABCAACABABABABACBACAAACBABABBCABABABABAAACCABCABCACBACBCABABACBACABACCABABCABCACABBBABCABABBCBBAACBBABCBBACBCACACABAABABCCBACABACBAABACBBABCABCACACBABACABCCABAACBCBABACABCBACCCCCBABAACBAABCAACBABABACACBCABACABCACBACAABACBAABABCABABCBCCABBCABABCCABCBAABCACACACABACBCAACBCBABCBBABCACABABABCABABBBABABABABABABABAAACA"
17

"JECLMN.AJAA..Q.LEHACF.B.KPKIJ.J.O.EDQ.B..JK...DG..A.IEDP....OABJMJG..O.PPF.PM..J.QHEKNFMOBBMLPQM.DI.J....PKOD.A.LJDIOQC.JM.MIDH.CDJKLCBAB.MAK....CL.MI.HH.I..HH..L.GABP.L.Q.OOBOQJOHA.CBGBJFNIKHDCEPO...DDQDDQ...G.CNM.F..OJ.FA.OPF..CHPP.LJDO.BKD....EODHFHGFL...DL..ILQKNFF..PPFD....NA..OH..QB.E.QLH...J.F..HMLJFNFD.ADF.N...AEJ.HN.JHAEPDA..JNEM.JMM.DM.L...N.HGKIP..GI.IMFJQEF..C.OB.OJOE.CP...ACCK.KON....H..FPCHO.GMG.HBJ.D..BCLK..PJFL..FAH.BKIDMQJALMGBPF.KGQDC.L.PA.MH.J..N..FD..F...A.NOG.MQ..GKIJOD.EJJQHJIEMLOE..HLH..O.P.QFAOKMA..AMJ..QQPIEIBKOGMA..EF.L.J..EK..LQ.F.OCKC..HMJLMGGMC.KHHOHLJLG...COP..J..DEG.FIG.PBAH...DC.G..D.M..JJ..BDLMA.G.C..LM.PCE.KOPG..EFFOG.B..PA.JNK...J.J.J.E.M..JIJQE.ELA.MLCI..IM.OHGEOBL..O.P.K.HFPL...CO.K.CAN.ALI...OAFCQAMJI.H.HCDD.NHL.HBCFK.QECPIEF.CKFQFA.CA..EFJGF.MI...AMAK...JQ.EK.LIMD..OBQCHF.CO.EBA.HFGJIO..JNJPO....MHBJ..FEBHKEIP.JP.FH.LMNDL.KP.....O...DB.GQ..O..HHD..KGKG.GDDFGB.APEHFHE.LKCH...BNG.GPMK..O..ALLF..ED..CKA.B...F.IFPP.FQN....G.PF.BPKD..I..MLJOQQ.MQFCBMFE.QAAAL.JKM.ED.NA.FJP..G..MBO.CNK.JH.IDLNDGKHBB.BMQOC..LO.HHFML.BI.CC....O.J..H.A.QP.NM.Q.J..PD.M..P.A..JDOJ.HEAD..GFA.HLN.D.K.N.B...P.G.JJ.KIFBKGMN.C...F.....LDBJ.D.EQ..FOFBN...QP..DE.E.E...J.....LI.J.JANH.C..M.DMPLBQMHHOPJBJDLAKAOD.CJ.O.KEPO.JPEN..KB.EO....N.QAG.C....KJ.F.N.Q.HP.IC.C.QMC..FFN.B.FM.K..L..QEAKO..EKMBPE.D...PIQJDA.OM..LFI..LMM...MOA.EM..KE..OFN..MI..IFLBNFK.OLM.NK.L.L.HNKQAGOJN.OCN.BJQEME....LB...M.....GOLQ...N...PGB..LOPGCJ..L.JHFDGB.LNHK.C..IQ.D.GG.C..POG.DNCNKP.CD..IB.L...H.A.ELJIJ.LLBK.ML.O.NFGQ..GKEK.K.NK..PF..BJC.JMFDDFF..D..QOBKK.P.B.AE.L.FP.B..H.IQAME.IAFQGELIKIQK.D.JD..A.PP.AICOA...NJL.PPNCPMMKHF.LOL...M.P..G.QGFEG.EDKALA.B.K.H..IM..MHQQE.L..KEFE..H..NIC..N..NI.BLO.IH.CPMBA...MDJ.N.KAP.EG.CA...OMHKDE.OFAG.BO.PF..LBFJLGDIMND...QDA..IPN..Q.QO.QM.IOHJ.LPE.PFA.GN.PBFJ.FHAEEQ...DNLGJCM.FNCINLQO.DQ..IMO...FBNANDCMOHDM.JJNKKDFL.K.D.KEHB.N.G.P.J.MCGO..KJ.LNA.ECCLPEC.NE.OH.JJ.GMGMOQ.LN.QH.G.KA.IHD..JQO..M...EJ.NMH.JLPH.H..GNLG.LJIFG.HLQPC.DJB.HOBPB.N...CQ.C...JBKBDDEG.K.KJ.OH.J.EFGQJEEEB...PJH...DPIOJM.J..PL.ML.HPQQ..IF.MABKAIHLLBNQ..COFMK.H.G.O..FE...P.C..ILCPA.IPJQJD..PM..NQ.P...ECK.GJ..OP.BKHNDNF.AECC..OQMKL.QIFJEGBHOI.K.E.KFMMB.CM.AH.HC.GKJGGD.F.E"

Returns: "JECLMNBAJAABAQALEHACFABAKPKIJAJAOAEDQABABJKABADGABABIEDPABABOABJMJGABOAPPFAPMABJAQHEKNFMOBBMLPQMADIAJABABPKODBABLJDIOQCAJMAMIDHACDJKLCBABAMAKABABCLAMIAHHAIABHHABLAGABPALAQAOOBOQJOHABCBGBJFNIKHDCEPOABADDQDDQABAGACNMAFABOJAFABOPFABCHPPALJDOABKDABABEODHFHGFLABADLABILQKNFFABPPFDABABNABAOHABQBAEAQLHABAJAFABHMLJFNFDBADFANABCAEJAHNAJHAEPDABAJNEMAJMMADMALABANAHGKIPABGIAIMFJQEFABCAOBAOJOEACPABCACCKAKONABABHABFPCHOAGMGAHBJADACBCLKABPJFLABFAHABKIDMQJALMGBPFAKGQDCALAPABMHAJABNABFDABFABCABNOGAMQABGKIJODAEJJQHJIEMLOEABHLHABOAPAQFAOKMABCAMJABQQPIEIBKOGMABAEFALAJABEKABLQAFAOCKCABHMJLMGGMCAKHHOHLJLGABACOPABJABDEGAFIGAPBAHABADCAGABDAMABJJACBDLMABGACABLMAPCEAKOPGABEFFOGABABPABJNKABAJAJAJAEAMABJIJQEAELABMLCIABIMAOHGEOBLABOAPAKAHFPLABACOAKACANBALIABAOAFCQAMJIAHAHCDDANHLAHBCFKAQECPIEFACKFQFABCABAEFJGFAMIABCAMAKABAJQAEKALIMDABOBQCHFACOAEBABHFGJIOABJNJPOABABMHBJABFEBHKEIPAJPAFHALMNDLAKPABABAOABADBAGQABOABHHDABKGKGAGDDFGBCAPEHFHEALKCHABABNGAGPMKABOABALLFABEDABCKACBABAFAIFPPAFQNABABGAPFABPKDABIABMLJOQQAMQFCBMFEAQAAALAJKMAEDANABFJPABGABMBOACNKAJHAIDLNDGKHBBABMQOCABLOAHHFMLABIACCABABOAJABHBABQPANMAQAJABPDAMABPBABAJDOJAHEADABGFABHLNADAKANABABAPAGAJJAKIFBKGMNACABAFABABALDBJADAEQABFOFBNABAQPABDEAEAEABAJABABALIAJAJANHACABMADMPLBQMHHOPJBJDLAKAODACJAOAKEPOAJPENABKBAEOABABNAQAGACABABKJAFANAQAHPAICACAQMCABFFNABAFMAKABLABQEAKOABEKMBPEADABAPIQJDABOMABLFIABLMMABAMOABEMABKEABOFNABMIABIFLBNFKAOLMANKALALAHNKQAGOJNAOCNABJQEMEABABLBABAMABABAGOLQABANABAPGBABLOPGCJABLAJHFDGBALNHKACABIQADAGGACABPOGADNCNKPACDABIBALABAHBABELJIJALLBKAMLAOANFGQABGKEKAKANKABPFACBJCAJMFDDFFABDABQOBKKAPABCAEALAFPABABHAIQAMEAIAFQGELIKIQKADAJDABABPPBAICOABABNJLAPPNCPMMKHFALOLABAMAPABGAQGFEGAEDKALACBAKAHABIMABMHQQEALABKEFEABHABNICABNABNIABLOAIHACPMBABABMDJANAKAPAEGACABABOMHKDEAOFAGABOAPFABLBFJLGDIMNDABAQDABAIPNABQAQOAQMAIOHJALPEAPFABGNAPBFJAFHAEEQABADNLGJCMAFNCINLQOADQABIMOABAFBNANDCMOHDMAJJNKKDFLAKADAKEHBANAGAPAJAMCGOABKJALNABECCLPECANEAOHAJJAGMGMOQALNAQHAGAKABIHDABJQOABMABAEJANMHAJLPHAHABGNLGALJIFGAHLQPCADJBAHOBPBANABACQACABAJBKBDDEGAKAKJAOHAJAEFGQJEEEBABAPJHABADPIOJMAJABPLAMLAHPQQABIFAMABKAIHLLBNQABCOFMKAHAGAOABFEABAPACABILCPABIPJQJDABPMABNQAPABAECKAGJABOPABKHNDNFBAECCABOQMKLAQIFJEGBHOIAKAEAKFMMBACMBAHAHCAGKJGGDAFAE"
3

"...C.CA.A....AAB..C.AC.CC..A.........C...CB.......A.....B......CA....ACB...C....B.B..B....B......C.B..CB.B......C......CBA........B.......AC..A.....A..........B..AB..A..BACA.CB....B....BB....A......BA.A.BC.........B........BA.............B.B...BB......C.A..A.B.AA...A...C..C.B.C...A...A....A.....CCC...A.....A....A.A...B..A....BC.CBA..A...C...C..A.............C..B..BB....C....B..BB..B....B...............CA..B.A.C..C..C..C............A.C.......C....CA.BB...B.B....C.A..........A.A.A..B.C.A.A.B.C...CC..BC..A..C........B..B.C.B...A..A...C..A.C...........A.C.....A......A.C...B.A...C.B..AB.BC.C...A...A.C..C.......B.A..CA....C..C.C....CC.......AB.A.A.BCC.A...C.............C...........CB.AAC...A.........A.C...C.A....C..A..............BA..B..B.....C..C..B....C...C........A.C..........A...CA..B.BC......CA......A.C...C.AA....C.C.B....C.....BAC......C...B...A.A...B..A.CACBBCBA.A............B............BA.BCC....C..C....BB..C.BA.....C..AB....A.A.B...A.B.......A..CCBA..B.....A.C....B..C.AA............C.A.A.CB..B....C.C.........B...B.C................AC.B....C.....A..A.....C..C...B...A.........BAC....ACCCC...AC......CCA.BA.....A.A..................B..C..........C.BB........BBA.......AB..C........C.....B..C..B..A..........B...B.......BB...B.A.B....A....A.B..A.C..C....C............C.....CC.B...B..AAC.A...A.AB...A.AACBB..C...C.........A.....AC...........C....AB......BA........A..ABA.......A......A...B.C.....B..B..C.C.....B...B....B..CA.CC...B.A......C...AC........C.B......C...CA...C.......B..B....BB....B....B.........A.AB....A...CA...C............B...................AB..A.........B...BB.....................CABB..C.B.B.CA.A..A..A....B..C....A..A..B..........B......C.......A.BA....B.....B.C...AB.....BAA.....C...A...........C...A..B.CACCA...B.C...C..B......B.........C......A.B.C.BAA...........C.......C...C.A.B...C.........CC.A.CBA.......CAB..B...A.....B..CCB........C.A..A.C..A.....A...C..........B.CBAC.B.B.....B.C...........C........ABC....A..C........A....C...A.C.B..B..........B.C.AA...BA........A..A.AA.B..CABCCA..B.A....B.CCBB......C...A....A.C....C......C.......C.......A.B...C.....C.....A.AC.......A....CBB...C..A"

Returns: "ABACACABABABCAABABCBACACCABABABABABABCABACBABABABCABABACBABABABCABABCACBABACABACBABACBABACBABABABCABABCBABABABABCABABABCBABABABABABABABABCACABABABABABABABABABABABABABABABACABCBABACBABACBBABABABABABABABACBCABABABABABABABABACBABABABABABABACBABABABBABABABCBABCACBCAABABABABCABCABACABCABABABABCABABABCCCABCABABABABABCABABACBABABABABCACBABCABABCABACABABABABABABABABCACBACBBABABCABACBACBBACBABACBABABABABABABABACABABCABCABCABCABCABABABABABABABCABABABACABABCACBBABABABABABCBABABABABABCABABABABACBABACBACABACCACBCABABACABABABACBACBACABABCABCABABCABABCABABABABABCABCABABCABABABCABCABABCABABCABABABABCACABCABABABCABCABABABABCABACABABACABCACABABCCABABABCABCABACBCCBABABCABABABABABABACABABABABABACBCAACABCABABABABABABCABACBABABACABABABABABABABABABABABACBABABACABCACBABABCABACABABABABABCABABABABABABABCABABABCABABABCABABABCABCABACBAABABACACABABABCABABABACABABABCABABABCABABACBABABCACBBCBABABABABABABABABABABABABABACBACBCCABABCABCABACBBABCABABABABCABABABABABACBABCACBABABABCABACCBABABABABCABCABACBABCBAABABABABABABACBABABCBACBABABCACABABABABABABABACABABABABABABABABACABABABCABABCABCABABABCABCABABABCABABABABACBACABABACCCCABCACABABABCCACBABABABABABABABABABABABABABABABCABABABABABCABBABABABACBBABABABABABABCABABABABCABABABABCACBABABABABABABABABABABABABABBABABCACBABABABABCACBABABCABCABABCABABABABABABCABABACCABABABABAACBABABABABABCABAACBBABCABACABABABABCABABABACABABABABABACABABABABABACBABABABABCABCABABABABABABABABCABACBACABABABACBABCACABABABABABABACBABCABCCABABCABABABACABCACABABABABCABABABABCABACABABCABABABABACBABACBBABACBABACBABABABABCABABABABABABCABABCABABABABABACBABABABABABABABABABCABABABABABABACBABABBABABABABABABABABABABACABBABCABABACABABCABCABABABABCABABABCABABABABABABACBABABABCABABABCACBABABABABABABACABCABABABABAABABABCABCABABABABABABCABCABABACACCABACBACABACACBABABACBABABABABACABABABACBACABAABABABABABABCABABABACABACBACBABACABABABABACCBABCBABABABABCABACBABCABABACBABCCBABABABABCBABCABCABABABABABABCABABABABACBACBACABABABABABACABABABABABACABABABABABCABABABACABABABABABABACABCABCABACBABABABABACBACBAABACBABABABABCABCABAACBABCABCCABABCABABABACCBBABABABCABCABABCABCABABCABABABCABABABACABABABCACBABACABABACABABCABACABABABCABABACBBABACABA"
3

"CCACABBB.CCBAA.CCBACCBBCCBBABBBBACAACABACBBCCCBCCCABCB..BCBAAACCB.CACBBCACBBBBCAAB.BACBBBCACBCBABCBCACCBABAACABA..AABBBABBCCCABCAACCACBC.CBABCAABAACBA.ABBCAABCACB..CCCBBC.A.AACCBCBCACBCBC.CCCBABABABACBAB.CAAC.ACBAACBBCBBBBBCACBACCCBBB.CBABBCCBBAA.C.BBACA.ABACCBBBCBAAABAAAABCCAABC.CCCBBABAACAABCB.ABC.A.CBAC.CABABABBBACBACBBCACCB.ABAAAAABACCAA.ABA.AAAAABCCBC..BBAACCBC.BAAACAAACACAABCCBCABABBCACBCC..BBCBCCABBAAACBABACACCABABCAACB.BBACBB.BACCA.BB.CCACABBA.CBACBBBACCBBABBCAB.BACBABCCCAABCACBCC..ACBBCABBCBAABC.AACBAACBBCCBAACBAACCA.ABCBAC.BCBA.BCAAAACCCABCCBCCBCBCBCABBACCCBBCCCBAACABACBACCCAAAAACBCABCACACABCCBABBBABBBBBCBCAAAAABABCBC.CABABBCCCBABCACBCAABACCBB..CBABACCABBBBCCAACCCABBCBBCACBCCCC.AC.CBCBAACCABAACBBABCBACAA.ACCCBBBBCCCACB.CC.ACBCABCB.ACCA.CBAAAACACCCCBBCBCBC.BCBAA.CBBCACCAABA.CB.CBCAACACB.CBACABCBBBBC.CBBAC.CAABAACACBACABAAC.ACACBBCBBACCBBBC.AAAABBAAAACCACCABBABCACACCCCA.ACCCCBAABCABCAACACBAABCCA.BABABAC.BBBBA.CCAABCCBB..ACCCCCBBB..ABAAABBACBCCBCBAABC.BABBCACCBCBA.BABCABB.BB.AC.CBBBACAABBCAAABBCCCBCBBBACCA.BCAABABBBACBABAC.CAACBCAC.BBBBCBCAAACCACBCCBCAABBBBC.BCAAB.AAAAAB.BBCACCAABBCCABBBACCCAABBCCBCBCCB.CACCABCBAACBBABBCABBBBBCACAABACBBABBB.AA.BAB.ABAACBCB.BABAAABCBCAAACBABAACBBAAB.C.BABB.CBB.BCCB.ABCCCABCCCBAC.BAB.ACBCBCACC.ABAABCBAAACCACCACB.CBAAACACCACCCBBA.CB.B.CACBCAAAABBBCBBCAAAB.BCABAACCCBCB.B.ACAAACBABBCCBABAA.CABBBACACACCABABBB.BB.ACBBCCBBACBABBCBCA.BCBAAABCBACACBACAAAAAC.CC.BABAA.BCBBC.CBBCABCABBABACCACBBABAA.B.BAABCBCACABB.BAAC.CCCBCBABACCABBABAABBACABAB.BBBABC.BAABCBABAACCA.CBABBB.CABCCABCACBBABBAACBABBBBCCC.CAB.CBBBABBCBAABAABC.BBCBABAB.BAACCBBCAACCAABCBAB.CACCBBCBB.CABAACCACCCBA.C.BCCCB.BB.CCCCACAB.CBCAC.BCBCAACABAABCAACCCAAA.CBCCBBABABBCCACCABBACCBAABBABCBCABBCAACCC.ABACBBBBC.CABCCCCCBACCCA.ABCBCCACAA.BBBBABAC.ACACACBACCCABACCCCBAABACBACCABCBBBACCB.AA.BCCA.CACCAA.AAAAACABABA.CCCACACC.CBC.AABAABACABAAACCBBAB.ABBCABBCCAC.BC.CBAABBBABAACAABC.AACCCAABCB.CBB.C.CB.CCCCACBAB.BCBBA.ACCBBAACACABABBCCBBCCACACCBCAAAAABAACA.BBCA.CCBBBCCCBCAACC.ABACAACBBAAAACCABBCBCAABCBCAA.ABACB.A.ACAACBBCBBACBABCBBCA.AA.BBC.C.BBCACAACACACCC..ACCABCBABBCAACABABABAABBAB.BBBBCBBCCBCABBBCBCAACCABACABCACCBBBCBABB.BBAAACACBABCAABABA.BBBC.CBACCAAAAABBBCBBABC.CA.CABAABBBCBBB..ACBBAAACBCBACBACBBBCCABABCAAACB.BBC.AACBBACACABABBBCAABCBCAA.AACCACCCCCBCCAABBCABAACCBCBABBCACC.BCABB.BABCCCCBACBB.ABCBCAABCB.ACABCAACBABAABABCBBABCBBCBAABCBBBA.AACBAB.CBBAABCCACCCABC.AABBBAAABCABCCCACAAACBAA.ABBABC.BCBAAACBB.AABA.BBC.BCBABACACBCABCB.CABBAABCAAAACC.AA.B.BBCBCA"

Returns: "CCACABBBACCBAABCCBACCBBCCBBABBBBACAACABACBBCCCBCCCABCBACBCBAAACCBACACBBCACBBBBCAABABACBBBCACBCBABCBCACCBABAACABABCAABBBABBCCCABCAACCACBCACBABCAABAACBABABBCAABCACBABCCCBBCBABAACCBCBCACBCBCACCCBABABABACBABACAACBACBAACBBCBBBBBCACBACCCBBBACBABBCCBBAABCABBACABABACCBBBCBAAABAAAABCCAABCACCCBBABAACAABCBCABCBABCBACACABABABBBACBACBBCACCBCABAAAAABACCAABABABAAAAABCCBCACBBAACCBCABAAACAAACACAABCCBCABABBCACBCCACBBCBCCABBAAACBABACACCABABCAACBABBACBBABACCACBBACCACABBABCBACBBBACCBBABBCABABACBABCCCAABCACBCCABACBBCABBCBAABCBAACBAACBBCCBAACBAACCABABCBACABCBACBCAAAACCCABCCBCCBCBCBCABBACCCBBCCCBAACABACBACCCAAAAACBCABCACACABCCBABBBABBBBBCBCAAAAABABCBCACABABBCCCBABCACBCAABACCBBABCBABACCABBBBCCAACCCABBCBBCACBCCCCBACACBCBAACCABAACBBABCBACAABACCCBBBBCCCACBACCBACBCABCBCACCABCBAAAACACCCCBBCBCBCABCBAABCBBCACCAABABCBACBCAACACBACBACABCBBBBCACBBACACAABAACACBACABAACBACACBBCBBACCBBBCBAAAABBAAAACCACCABBABCACACCCCABACCCCBAABCABCAACACBAABCCACBABABACABBBBABCCAABCCBBABACCCCCBBBABABAAABBACBCCBCBAABCABABBCACCBCBACBABCABBABBCACACBBBACAABBCAAABBCCCBCBBBACCACBCAABABBBACBABACACAACBCACABBBBCBCAAACCACBCCBCAABBBBCABCAABCAAAAABABBCACCAABBCCABBBACCCAABBCCBCBCCBACACCABCBAACBBABBCABBBBBCACAABACBBABBBCAACBABCABAACBCBABABAAABCBCAAACBABAACBBAABACABABBACBBABCCBCABCCCABCCCBACABABCACBCBCACCBABAABCBAAACCACCACBACBAAACACCACCCBBABCBABACACBCAAAABBBCBBCAAABABCABAACCCBCBABCACAAACBABBCCBABAABCABBBACACACCABABBBABBCACBBCCBBACBABBCBCACBCBAAABCBACACBACAAAAACACCABABAACBCBBCACBBCABCABBABACCACBBABAACBABAABCBCACABBABAACACCCBCBABACCABBABAABBACABABABBBABCABAABCBABAACCABCBABBBACABCCABCACBBABBAACBABBBBCCCACABACBBBABBCBAABAABCABBCBABABABAACCBBCAACCAABCBABACACCBBCBBACABAACCACCCBABCABCCCBABBACCCCACABACBCACABCBCAACABAABCAACCCAAABCBCCBBABABBCCACCABBACCBAABBABCBCABBCAACCCBABACBBBBCACABCCCCCBACCCABABCBCCACAACBBBBABACBACACACBACCCABACCCCBAABACBACCABCBBBACCBCAACBCCABCACCAABAAAAACABABABCCCACACCACBCBAABAABACABAAACCBBABCABBCABBCCACABCACBAABBBABAACAABCBAACCCAABCBACBBACACBACCCCACBABABCBBABACCBBAACACABABBCCBBCCACACCBCAAAAABAACACBBCABCCBBBCCCBCAACCBABACAACBBAAAACCABBCBCAABCBCAABABACBCABACAACBBCBBACBABCBBCABAACBBCACABBCACAACACACCCABACCABCBABBCAACABABABAABBABABBBBCBBCCBCABBBCBCAACCABACABCACCBBBCBABBABBAAACACBABCAABABACBBBCACBACCAAAAABBBCBBABCACABCABAABBBCBBBABACBBAAACBCBACBACBBBCCABABCAAACBABBCBAACBBACACABABBBCAABCBCAABAACCACCCCCBCCAABBCABAACCBCBABBCACCABCABBABABCCCCBACBBCABCBCAABCBCACABCAACBABAABABCBBABCBBCBAABCBBBABAACBABACBBAABCCACCCABCBAABBBAAABCABCCCACAAACBAABABBABCABCBAAACBBCAABACBBCABCBABACACBCABCBACABBAABCAAAACCBAACBABBCBCA"
3

"CCBCBCBAAAB.CBAAB.CBBCABCACCCCBCCABAAACBBABBAAAABCCCCBACABAABACCC.BCCCCBACAC.BAAB.CABBCBBBAABBBAACCCBCCBCBBBBBCCCCACCBBCABAAAABBAC.BCACCACAABCCBACBBACC.ABBBCCCBB.CABCCACBACBAABBCAAABCBBCBABCABC.CACCBC.CCCBCABCCC.CBCBCBCABACCAABCBACBCBBACAABCAACBCBBBBAC.BACABBBBABAAACAABACABCCCCBBCBCBCBBACCCBAACBBCAAACCACCBAABBAACBBABABAAC.CAACBBAACBCBBABBBBCCBA.AACBACBCAAABACBAACACCCCCACCCBCCBBACACACACBACB.AACABCBCB.BBB..ACCACCCCCACA.AACBAABABB.ACCCBACCC.A.BBBABAAAACACABCBCBCBABBAABCBBCACCBACCCABABCCCBA.CAABC.BBACBCBBCBBCCBABCBAACCBCBBACBCACCABBBBAABACAAB.AACACAACBBBCABBCCABAAAACBCBABBACCACAACACBACAAAAAAAABCAB.CABCBACACBABABBBACACAACBABAAAAACCBCAABAC.BAABBAACACCA.ABCAB.CBCBBBACCAACC.BCCB.CBBBBCCABACBBBACABCBCB.ACCAA.CCABCB.C.CCACCABAABCA.AABBACCBBCBCBAACCBCBBCAACACACCCABBABBCCCBCAACBABACCBCC.BAACBCCCBCAABB.B.BACBBBCABABACAACCAAABACBCCABBCACAABACACCCCACC.ACABBCABCBBABCCBCBBBBBCCBBACBBBBCBAABABAAAAACACACCCBCBABA.BACAABCABBACAABBACBBAABB.ABBCCAAAAAACACBABAAAAAAAABBBBACCAACABCBACBBBABCBBABBABCCBBCBAB.CBABCACA.ACCACABCCCBBBCBABAABAABBBBCAACA.ABCACCACCBC.ABBCCCCCACABBBBBCABBCAABABBCBBCCCCCAAAABABBAACBACABCACABBCCCCBCBCBCBAACB.CAACACCABCCBCBBABCABAAABBACBBACC.ABCCBCCACAAA.CCBCBBCC.AAAABBCBABCBABACABABBCACACCCABBABCCBBACABBACCBCCCCACCAABBBBCACBBACAAA..BBAACBCCCAAAACAAABABACB.B.BCABAB.ACACBBABBCBAABCBCCC.BAACBBCAABA.CACAAAAAAAAC.A.CBCAABCBACCAACACAACCABA.CC.AAACAAA.ABBAABAAABBCBBBABBACBACACCBBBBABACA..BBABCBBBCBBC..CBCACBBCABBCBACAABCCCCACACAAACBCBBB.AABCAB.BBCABCABCAA.BBBABBCBBACC.ACACCCACAAACBBCBBC.ACACCBCCCACBAABBABA.BACCABACCBCABBACBCCAABCBCBCBAACCCBB.CACBBABCCCCBCCAC.CCACABBAACCCCCBCBAACBBBCACBCBCBBBCAACAB.BABACCCBBCAABACAACABCBCBABABACABBBABCACCBAAACACCBBCCCBCABCCBABCACAAABBBAAA.BCABBABBACCCCABBBABCAACAA.CCA.ABCABAABBACACBBAAACCCACCCABCAACC.BCCCAACBBCCCCCACBABBBBBBBCB.BCBCABCBBACACAAACCAABACBABCBCABBBBAAABBBABCACCC.ACBCA.ACBAACCBABABC.CABBBCCBCBAC.ACBABABBCBBCCBCACCCCACCCCACAC.CACAA.ABACAACCBBCBCBCCCCBBCACBBA.BAAB.CABCBBBBA.BBBBCCABBCA.BCACAACABBCBCCBBAABCCBACACB.BACBCBBCCBACCBCCBBCBCCCABABCACBCBABABCCCCACCABAAABCCACACBAACCBBCC.CABACABC.CAAAAACABABCCBCBACABCCCBBBCCCB.AB.ABBA.AAACCCAACCBBBBAACCBCACABCCABCACABCAA.BAB.AABABCBBCAAAAABCBC.ACACCBBBBBACCBACAA.AC.BABCCCACCCCABBBACBBCCBCCAABCBCCAAAAAACCBBBACCABCBBACCACABACCAA.ACAC.CCBCABBAABBBCCABCBAABABBBCABACBBBBBBBACCCACCAC.CBCCB.CACCBCCCCCCABBACCACBABAAABABCAAABCAABB.CBBCACBAACABCCBCCCABCBAABABCA.CCBAB.ACBBBCCCBBABCBACCAB.ACCCA.B.C.ABBAAAAABBBBCBABBABAACABACCBCACC."

Returns: "CCBCBCBAAABACBAABACBBCABCACCCCBCCABAAACBBABBAAAABCCCCBACABAABACCCABCCCCBACACABAABACABBCBBBAABBBAACCCBCCBCBBBBBCCCCACCBBCABAAAABBACABCACCACAABCCBACBBACCBABBBCCCBBACABCCACBACBAABBCAAABCBBCBABCABCACACCBCACCCBCABCCCACBCBCBCABACCAABCBACBCBBACAABCAACBCBBBBACABACABBBBABAAACAABACABCCCCBBCBCBCBBACCCBAACBBCAAACCACCBAABBAACBBABABAACACAACBBAACBCBBABBBBCCBABAACBACBCAAABACBAACACCCCCACCCBCCBBACACACACBACBCAACABCBCBABBBABACCACCCCCACABAACBAABABBCACCCBACCCBACBBBABAAAACACABCBCBCBABBAABCBBCACCBACCCABABCCCBABCAABCABBACBCBBCBBCCBABCBAACCBCBBACBCACCABBBBAABACAABCAACACAACBBBCABBCCABAAAACBCBABBACCACAACACBACAAAAAAAABCABACABCBACACBABABBBACACAACBABAAAAACCBCAABACABAABBAACACCABABCABACBCBBBACCAACCABCCBACBBBBCCABACBBBACABCBCBCACCAABCCABCBACACCACCABAABCABAABBACCBBCBCBAACCBCBBCAACACACCCABBABBCCCBCAACBABACCBCCABAACBCCCBCAABBABABACBBBCABABACAACCAAABACBCCABBCACAABACACCCCACCBACABBCABCBBABCCBCBBBBBCCBBACBBBBCBAABABAAAAACACACCCBCBABACBACAABCABBACAABBACBBAABBCABBCCAAAAAACACBABAAAAAAAABBBBACCAACABCBACBBBABCBBABBABCCBBCBABACBABCACABACCACABCCCBBBCBABAABAABBBBCAACABABCACCACCBCBABBCCCCCACABBBBBCABBCAABABBCBBCCCCCAAAABABBAACBACABCACABBCCCCBCBCBCBAACBACAACACCABCCBCBBABCABAAABBACBBACCBABCCBCCACAAABCCBCBBCCBAAAABBCBABCBABACABABBCACACCCABBABCCBBACABBACCBCCCCACCAABBBBCACBBACAAABABBAACBCCCAAAACAAABABACBABABCABABCACACBBABBCBAABCBCCCABAACBBCAABABCACAAAAAAAACBABCBCAABCBACCAACACAACCABABCCBAAACAAABABBAABAAABBCBBBABBACBACACCBBBBABACABABBABCBBBCBBCABCBCACBBCABBCBACAABCCCCACACAAACBCBBBCAABCABABBCABCABCAACBBBABBCBBACCBACACCCACAAACBBCBBCBACACCBCCCACBAABBABACBACCABACCBCABBACBCCAABCBCBCBAACCCBBACACBBABCCCCBCCACACCACABBAACCCCCBCBAACBBBCACBCBCBBBCAACABABABACCCBBCAABACAACABCBCBABABACABBBABCACCBAAACACCBBCCCBCABCCBABCACAAABBBAAACBCABBABBACCCCABBBABCAACAABCCABABCABAABBACACBBAAACCCACCCABCAACCABCCCAACBBCCCCCACBABBBBBBBCBABCBCABCBBACACAAACCAABACBABCBCABBBBAAABBBABCACCCBACBCABACBAACCBABABCACABBBCCBCBACBACBABABBCBBCCBCACCCCACCCCACACACACAABABACAACCBBCBCBCCCCBBCACBBACBAABACABCBBBBACBBBBCCABBCACBCACAACABBCBCCBBAABCCBACACBABACBCBBCCBACCBCCBBCBCCCABABCACBCBABABCCCCACCABAAABCCACACBAACCBBCCACABACABCACAAAAACABABCCBCBACABCCCBBBCCCBCABCABBABAAACCCAACCBBBBAACCBCACABCCABCACABCAACBABCAABABCBBCAAAAABCBCBACACCBBBBBACCBACAABACABABCCCACCCCABBBACBBCCBCCAABCBCCAAAAAACCBBBACCABCBBACCACABACCAABACACACCBCABBAABBBCCABCBAABABBBCABACBBBBBBBACCCACCACACBCCBACACCBCCCCCCABBACCACBABAAABABCAAABCAABBACBBCACBAACABCCBCCCABCBAABABCABCCBABCACBBBCCCBBABCBACCABCACCCACBACBABBAAAAABBBBCBABBABAACABACCBCACCA"
24

".GJ.S.TFBN.SRX.JKVVR.VWQNFV.KJNDKDHLXXLOASXSAPQDIVP.OXD.SLRUTP.UE.CCITXWEOU.QTE.LXQXUHFANB.VL.GD.VVNJEXKFBGQPBHWB.CXPUDCR.X.BEDQDCATJV.NUKITORJTDH.RBH.QRQRRN.MKJMPC.EXRDRFTA.UTGAALWMLAUPK.RGH.D.OARLONFMTDDJXVLPS.QCSRTWJ.GOFSMTRPJRID..MVJDPMCRXRUNITWWW.BU..WUX.MWBNMIRXVFKEKUJQOTPMMGEIRNE.S.ADO.SHFMWOULKUJXV.PQAAUGUAXXQ.NNVXHPCN..WFCSR.GKBFNNAEW.A.VRHHDDJESTPMONGP.GSI.VRRNU.WBNMCKEPIAWQWNHAN..LTQXNTLANMFBLC..AKODVE.SUANAP.PFCS.W.JBVOUFJS.SRNXJBNGM.E...QLBQQUTFMC.MSSWW.NTEC.IA.R.SXJ.TDKX.JCVDW...APUJVM.MQUEESN.UQVJEHATON.OJ.IVFSISUPLODGSQUWCGJRE.HMF.LNQSNP.WBBNV.PT.SRHKXJ.CKMTCKRFOVHFLVXJCOLIFMAD.URJUWSRCRQ.GGPUKPBWKWS.E.VWGSDSOFCW.PUBRELTLHEFOSUROGBVTDCNFFPOINAFOQDILBN.LSMNRIHVRUUCPUNAOSM..GLEUMJIAFAFPQGIPT.QQ..L...VUFR.DJC.TFQSRTDP..RO.LI.VLSR.JKQSHHOBAWMTH.M.RPT.WJSDDXE.ILD.EGLWXPBM..VCMWSORTVDIQSIRSCLKDQINSHEFLCHNDAWMS..CC.UJCVJSWPOUEAPNK.ESBGEGDSAS.VMPEEXHXSJP...GLKJJS.AURBWINU.PGWUO.UU..KITPUVV.XIL.LCNQI.GMDGKOL.DG..WKTKJAIG.Q.BL.IK.KDGDJ.FK.MHEJHXKNQTNIHEAVUIEKSSEU.PUM.ORBH..UFXECBRPDENOURHNGGLX.SFPVICSOTOIJDNVGX.FKKBNLFBATEWCSFSDWAVOIXWU.AHVQKURXMHLCWBPFVDWB.F.MBUECJWWDLETGKHXXTTVSQMRIRXSPKTLGAWCQAXFL.LSUSPI.KPRLPCO.LTIAHKTNFL.EUFIWEUDIDEURJGJRCRULODA.GTQEIWHTJTWBBDJGH...VFWFNAESQXJURGDD.SIJA.HAPSAJFNOPHJWEHPOPTFSCKFF.CDFPDKKRCNRNMHB.XNGQCKWP.SJRPMOIJNHGARDUCBDCDWBFPRK.G..XOOPSU.WAPR.NK..WIQVTP.TUIJXTMVNLVHXMXBATAXKPEOVWNJUTDA.MSAFVVKMIMXFGVOVXXOQ.FERVXXURQOJOVUK.T.ME.LUJJNOOIFDWCDSCP.NIBPMLVLFTFDXQAHDBMXKTETOGXQPXXPOGCM.HOVBBX.AJENM.FX.EF.WHAOMEODIVMICOBLJDHIPOW.UPBK.MF.OCSEFNVR.KGKPVNCLKOP.EOMDWXKMOREGGOT.LRAA.NHQ.Q.MMNRBLJE.XN.FOQMWGOG.KRVANXH.K.PP.DCBKMVT.FWOFDTCRV.MWF.TREWFBBRHJWB.FWO.HXWH.VADFTVOAQAOIHHAQOBUQN.EF.WTDNNIMIGCBJDA..NOTFWUJBJRWWBBR.NLFL.OEVQOLA.U.XXJHKREJR.H...GTFLQBLE..QEMJUEKTWECHWPSIEKJ..FPJOHHGPVNMXPEIGEEQ.KCAROM.G.A.ILFFWLJFVCFSNCDJMMSOHILX.E.ORUNHQ.DKGUKRNWRLDEAFNUJ.GMXS.KCUDVKHSHMUX.AXKKKFNVNWG..VWOJSTJ.DDVCCSVFCNIHAGANIMGXMCUVC.LINJPUHNSNGPIMAKQWR..WAFM..NJWAVBWPEBUK.CW.UVTG.NO..AHAXJKNEKBBJJROI.ASCIJ..UWFVW.UVVPJAH.SUKDVM..WFAQLECHBLUFDMCPVMLPUQXGBSOAGMJI.L.VP.TJQEFBP.K.RCEVLNTKPTDABKQRBFMAES.IJJ.TWVVBLNFOMSEUQXSBMVAV.HIWTQMTMCM.ROLJTIIOMUV.ULL..K.JFS.G.GJSWWQSMTU.Q.QQIK..M.OQIRU.K.T.IPEI.X.L.WEUEBSSGVMEKKEXJNUNSKLHFHMDPPE.EEICNLHVU..PTCQPCKN.UMO"

Returns: "AGJASATFBNASRXAJKVVRAVWQNFVAKJNDKDHLXXLOASXSAPQDIVPAOXDASLRUTPAUEACCITXWEOUAQTEALXQXUHFANBAVLAGDAVVNJEXKFBGQPBHWBACXPUDCRAXABEDQDCATJVANUKITORJTDHARBHAQRQRRNAMKJMPCAEXRDRFTABUTGAALWMLAUPKARGHADAOARLONFMTDDJXVLPSAQCSRTWJAGOFSMTRPJRIDABMVJDPMCRXRUNITWWWABUABWUXAMWBNMIRXVFKEKUJQOTPMMGEIRNEASBADOASHFMWOULKUJXVAPQAAUGUAXXQANNVXHPCNABWFCSRAGKBFNNAEWBABVRHHDDJESTPMONGPAGSIAVRRNUAWBNMCKEPIAWQWNHANABLTQXNTLANMFBLCABAKODVEASUANAPAPFCSAWAJBVOUFJSASRNXJBNGMAEABAQLBQQUTFMCAMSSWWANTECAIABRASXJATDKXAJCVDWABCAPUJVMAMQUEESNAUQVJEHATONAOJAIVFSISUPLODGSQUWCGJREAHMFALNQSNPAWBBNVAPTASRHKXJACKMTCKRFOVHFLVXJCOLIFMADAURJUWSRCRQAGGPUKPBWKWSAEAVWGSDSOFCWAPUBRELTLHEFOSUROGBVTDCNFFPOINAFOQDILBNALSMNRIHVRUUCPUNAOSMABGLEUMJIAFAFPQGIPTAQQABLABAVUFRADJCATFQSRTDPABROALIAVLSRAJKQSHHOBAWMTHAMARPTAWJSDDXEAILDAEGLWXPBMABVCMWSORTVDIQSIRSCLKDQINSHEFLCHNDAWMSABCCAUJCVJSWPOUEAPNKAESBGEGDSASAVMPEEXHXSJPABAGLKJJSBAURBWINUAPGWUOAUUABKITPUVVAXILALCNQIAGMDGKOLADGABWKTKJAIGAQABLAIKAKDGDJAFKAMHEJHXKNQTNIHEAVUIEKSSEUAPUMAORBHABUFXECBRPDENOURHNGGLXASFPVICSOTOIJDNVGXAFKKBNLFBATEWCSFSDWAVOIXWUBAHVQKURXMHLCWBPFVDWBAFAMBUECJWWDLETGKHXXTTVSQMRIRXSPKTLGAWCQAXFLALSUSPIAKPRLPCOALTIAHKTNFLAEUFIWEUDIDEURJGJRCRULODABGTQEIWHTJTWBBDJGHABAVFWFNAESQXJURGDDASIJABHAPSAJFNOPHJWEHPOPTFSCKFFACDFPDKKRCNRNMHBAXNGQCKWPASJRPMOIJNHGARDUCBDCDWBFPRKAGABXOOPSUAWAPRANKABWIQVTPATUIJXTMVNLVHXMXBATAXKPEOVWNJUTDABMSAFVVKMIMXFGVOVXXOQAFERVXXURQOJOVUKATAMEALUJJNOOIFDWCDSCPANIBPMLVLFTFDXQAHDBMXKTETOGXQPXXPOGCMAHOVBBXBAJENMAFXAEFAWHAOMEODIVMICOBLJDHIPOWAUPBKAMFAOCSEFNVRAKGKPVNCLKOPAEOMDWXKMOREGGOTALRAABNHQAQAMMNRBLJEAXNAFOQMWGOGAKRVANXHAKAPPADCBKMVTAFWOFDTCRVAMWFATREWFBBRHJWBAFWOAHXWHAVADFTVOAQAOIHHAQOBUQNAEFAWTDNNIMIGCBJDABANOTFWUJBJRWWBBRANLFLAOEVQOLABUAXXJHKREJRAHABAGTFLQBLEABQEMJUEKTWECHWPSIEKJABFPJOHHGPVNMXPEIGEEQAKCAROMAGBABILFFWLJFVCFSNCDJMMSOHILXAEAORUNHQADKGUKRNWRLDEAFNUJAGMXSAKCUDVKHSHMUXBAXKKKFNVNWGABVWOJSTJADDVCCSVFCNIHAGANIMGXMCUVCALINJPUHNSNGPIMAKQWRABWAFMABNJWAVBWPEBUKACWAUVTGANOABAHAXJKNEKBBJJROIBASCIJABUWFVWAUVVPJAHASUKDVMABWFAQLECHBLUFDMCPVMLPUQXGBSOAGMJIALAVPATJQEFBPAKARCEVLNTKPTDABKQRBFMAESAIJJATWVVBLNFOMSEUQXSBMVAVAHIWTQMTMCMAROLJTIIOMUVAULLABKAJFSAGAGJSWWQSMTUAQAQQIKABMAOQIRUAKATAIPEIAXALAWEUEBSSGVMEKKEXJNUNSKLHFHMDPPEAEEICNLHVUABPTCQPCKNAUMO"
19

"...........................................................................................................................................................................................................................................L.....................................................................................................................................................................H..........................................................................................................................................................................................Q......................................................................................................................................................................................................................................................................................P....................................................B........................................................................................................................................................................................................................................................................................................................................N.......................................................................................................................................................................................................................................................................................................................................................K..........................J...................................................................................................................................................................................................................................N......................................................................................................................................................................................................................................................................................................................................"

Returns: "ABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABALABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAHABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABQABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABPABABABABABABABABABABABABABABABABABABABABABABABABABACBABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABNABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAKABABABABABABABABABABABABABJABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABANABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABABAB"
3

"BC.C.CCBBCCBCB...A..CA...AAAACBBCB.ABABCBBABCB.CBB.BABA.CCCCCB..CAACCB.CBCAAB.AAABA.ACCCBAB..BACAB.ACA.BA.CBB.ACCCCBA.A...BBCBCBAABA.ABAAABBC.CB.AC.AA.BA...CCC...AAC.CCACA.C.BAC.AABACCAB...B..CBC.BBBABCB.A.A.CCBBAAACAB.CBC.B..CAB.BABABBC.C.C.CACBAA.A.BABA.CBAB..BABBBABBABB.B.AAA.C.BCCCCA.ABA.B.BC.A.CAA..CA.ACC.AACCA...B...CBACC.ACABBBC..ACBAC.BC.CBCABBAACAA.C.C.BC.CC.CBBA.CCBCAC..B..CCABB.CB.BBBA.CBBC..AC.CC.AAC.AA.B.B.CCCC.C.CAAAAACBCABAABBBCCCCABC.CCBC.C.BB.BB.B.BACAB.CBBBABBAABC..ABACACBA.AACBCBCBBCBBCCAACBABAAA.A.CC.BAABC.C...C.AC.AB.B.BAAABA.CC..CC.CB..BABBAABB..CCABB.CA.ABBACBA.B.B.BCCB.A.ACBA.B.A.CAB.CC..A.BCA.CCCCABBABCC.B.ABAC.BC..AAABAAC.C..BCCB.AA.CBCBACA...CA.AACA.A.CCBCCAACB.CCCBBC.BAA.CBCAC.C.CCBC.CCAC.CA.CAA..CB.CCABCBABBB.BAC.A.ACB..CAC..CBAAACBABC.A.ABAABCAA..ACA.B.BBBBB..AC.C.BCAACC.A.AAA.AC.BA..BC.C.BC...B.ACCBAAABACCCA..BAA.CCBB..CACBABCBCBA.CCCCB.CCABBCCBC.BCCBA..B.CBBBACACAB..BCC.B.CBACBAAAB...AAC.ABB..ABBCCBACAC.A.CBABBC.CACBBCB.BB.A..B.ABC..AACAAABB..BBA.BCACC.C..BBCCAABABBA.A.C.CAAA..C....BABABB..CBACAAA.AABA.CABCBCA.BCAA.A..BCBAAAA.CAACBABCB.B.ACA..C.BC.CCBCBAC.C..AAB.BCB..C.B.B.BBAAA..BAC.ACCCC..B.BAA.AABCBC.C.ACBBCCBBBA..AABAACABB..CAAB.ACA.BA..ABCCBC.BBBCCBCCCBC.CC....CBBC..BABCAA.CABBCCACAA..A.CCA.CBCBABCAC.CBCACBB.CAAB.BA.ABA..AACAB.ABBAAACB.CC.CABABA..BACCCCABA...C..ACCBBAA..B.CB.ACACACCCCACB..AACCBBB.B.CCA.C...C.ABBCB.BA.B..BAAB.CCCABCAABBB.BACCCAA..BBABCBBC.BCA.BCABACABC...CBBBB.CCBBAA..ABACBC..BAAAABABCCABCABB.AACCCAB.B.CCAAABAA..A.B.BB..CABCBACACB.BB....BBA..BABAAABAC.BBCBB..CCCABA.ACACC.AAC.BBBCCBABCABCABBBAABBBB..AAAB.BAABB.ABCBCA.C.BBCBC..B.BACCCCAABCA..CBAACC.B.B.CBAB.BAA.AABA.ABAAACACB.CACC.BCBCAC.BCCA..B.BAC..CCAB.CCB.C.BACA.BACCC.CA.BAA.ABA.AAC.CBBB.CCBAB....ACBACC.BAB.BA.AC.AAC.CC....ACBACACA.C.CB..CACCBC.CB.CCBBACBACCCAAB.BAB.B.BCC..CA.CACBACBCCCB...BBC.C.AACBABCCCCCCAA.AB.B.BBC.BABCACC.BA..A..C..CBA...AAAC.C.A.BCCAAA..C.A.CABBCBA..ACBA.BCC.B.ACCA.BA..AACACC.B.CA..BABABACCBAC.ACC.ACBB.CBACA.C.BB.ABA..ABCAB.BBB.......B.BAAB.BA.BAA"

Returns: "BCACACCBBCCBCBABCABACABABAAAACBBCBCABABCBBABCBACBBABABABCCCCCBABCAACCBACBCAABCAAABABACCCBABACBACABCACACBABCBBCACCCCBABABACBBCBCBAABABABAAABBCACBCACBAACBABABCCCABCAACACCACABCABACBAABACCABABABABCBCABBBABCBCABABCCBBAAACABACBCABABCABABABABBCACACACACBAABACBABABCBABACBABBBABBABBABCAAABCABCCCCABABACBABCBABCAABACABACCBAACCABACBABACBACCBACABBBCABACBACABCACBCABBAACAABCACABCACCACBBABCCBCACACBABCCABBACBABBBABCBBCABACACCBAACBAACBABACCCCACACAAAAACBCABAABBBCCCCABCACCBCACABBABBABABACABACBBBABBAABCABABACACBABAACBCBCBBCBBCCAACBABAAABABCCABAABCACABACBACBABABABAAABABCCABCCACBACBABBAABBABCCABBACABABBACBACBABABCCBCABACBACBCABCABACCABACBCABCCCCABBABCCABCABACABCABAAABAACACACBCCBCAABCBCBACABABCABAACABABCCBCCAACBACCCBBCABAABCBCACACACCBCACCACACABCAABACBACCABCBABBBABACBABACBABCACABCBAAACBABCBABABAABCAABCACACBABBBBBABACACABCAACCBABAAABACABABABCACABCABABCACCBAAABACCCABABAABCCBBABCACBABCBCBABCCCCBACCABBCCBCABCCBABABACBBBACACABACBCCABACBACBAAABABCAACBABBABABBCCBACACBABCBABBCACACBBCBABBCABABCABCABAACAAABBACBBACBCACCACACBBCCAABABBABABCACAAABACABACBABABBABCBACAAABAABABCABCBCACBCAABABABCBAAAABCAACBABCBABCACABACABCACCBCBACACABAABABCBABCABABABBAAABABACBACCCCACBABAABAABCBCACBACBBCCBBBABCAABAACABBABCAABCACACBABCABCCBCABBBCCBCCCBCACCABABCBBCACBABCAABCABBCCACAABCABCCABCBCBABCACACBCACBBACAABABABABABCAACABCABBAAACBACCACABABABABACCCCABABABCABACCBBAABABACBCACACACCCCACBABAACCBBBABACCABCABACBABBCBABACBACBAABACCCABCAABBBABACCCAABABBABCBBCABCACBCABACABCABACBBBBACCBBAABCABACBCACBAAAABABCCABCABBCAACCCABABACCAAABAABCACBABBABCABCBACACBABBABACBBABABABAAABACABBCBBABCCCABABACACCBAACABBBCCBABCABCABBBAABBBBABAAABABAABBCABCBCABCABBCBCACBABACCCCAABCABACBAACCABABACBABABAABAABABABAAACACBACACCABCBCACABCCABABABACABCCABACCBACABACACBACCCACACBAABABABAACACBBBACCBABABABACBACCABABABABACBAACACCABABACBACACABCACBABCACCBCACBACCBBACBACCCAABABABABABCCABCABCACBACBCCCBABABBCACBAACBABCCCCCCAABABABABBCABABCACCABABCABACABCBABABAAACACBACBCCAAABACBABCABBCBABCACBACBCCABCACCACBABCAACACCABACABABABABACCBACBACCBACBBACBACABCABBCABABCABCABABBBABABABABABAABABACBAA"
12

".AK..L..KK.C.I.F...H...B.CFH.IKCKJK.DE.EFD.F...JD..J.H.IB....EBBD......B.EI..F..E..DJK.B..ID.I..B.IAI..DKEIJ...CI.L...A..LK....E..GK...GJ.AK.BDHK.B..I.K...KIAG.B.H.CFLB..DF.AKH.FJ..C.KA..LH...B.......EK....K..F....KG..H...A...F.A..JK..LC.JC.AJ.B...I.CB.F.E.F.K.CDLL.AAH.KC....J..I...FFC.JKI..AE.I.....J...AK.KJEBG..GGKLE....FH..LB....G.H....F.......J..JBLB..ACFAK.F....EIK....F.BA.....GD.F.B.C.BD...G.G...EGJAD..E.JLHCHIE..L.CBA.EBDDLDG.I..G.IEKDFEDG.II.E.JGJF.H..B..K.E..EJK...K.H.IJ.G.BH.L.D..G.B...B..DF....D....J.HGKLB.K..IEE.HE...G..FF.G.IB.AF......LHK..HL.DIEGB...G.F.E.F.FK..LF..J.I..FLDB.DI....DCDE..C........L......J....C.L.JAEBJ.F..G..J.BFC.I...FC..D.D..L.G.GD..JEG..DLBD.....BCB..K.D..H.DL..L.LFFL..I...F...KGE.........CK.BDC..C.FC.H.DHDBBCB..F..J..LIJL.H....JGB.E..ELD..K.BL....D.G....L.C.DEH.IJEH......KD.IBD....D..F.ADH.ACF.IC..JED.....GI..HIAK...JL.C.AA...J..AFJ...EJ.KG.G.......E.DK....E.GDLH...E..A..H.JEH.HEIJHC.G....G...ECEFKH.J.D.DIFB..........AF..KLKDB....A..JDCH.LG.BA...L.J......H.FLFIAGC.F.I.B.F.E.G.JEB.HD.HC..LA..F.KEFBGG.K..GEB..I.D..EIKF..JG..L.L.LAG.JCJ..CHG.L.I.......G.GG.F.DLL.HEF.CB.L..E.B.....CC...CD.C...K...HK...BJDKJHLI...G.......BJ..FLEGL..EFHC.FE..D.KCIF..D..EL.JL.H.C...G..F....HB.L..G..D.......G...D..A.C.DA...J.EGBBDCJII.HG.KLLAD..I.DKC..AEJHJ...JC.FEJF..KE.CECH..F...A..F.CJ.C.L.LC...AH.DCAAJ.I.FDF......DD..ECHA.KE.K......LH...GIHDH..F.DHB...B....C.G.B.JEJ.EBLIFK.ALB.HAHB..F.GJFB..K...CKG.HD.....L.I.A.J.A.D.I...GI.J.F.GIEI.CG.E.F.I.A.ID...KD.C...EJ.FEI.A.J.IFA.CIA.BF...CD.B.LJC.J....JJ.I.G.CL.GKH..D........II.CEL..I.....G.....HF...JA...L...B...J.HECFAD.DFA.DHD..H..I..G.JEJEL.F.B..LD..BC.A..IF.IJ.G.JI...B...KKJ.GA.E..AJI.E.AEL.........ED..........CHBF...H.C..BH.ACD.LL........G...G.BK..DA..IHI.D.....K.CJ....E...E..JI....B.E..JLF.....LF.B.......A.FE..G..E.C..K.AG.BBB..A.H...I.F.IAE.K.G....EBI.F.......E..H.....E.E..A......LG..D.JEF.G.C.....A.JIC.C.GJID.J..L..KKG..C...D.EHB.D...KJH.K.JCJ.BIJLHK.B.H.C..A..I...G.ECGC.K.GD...F.....E.CE.D.I.EF..H.B...GBL..I.JLC.A...C.G.CC...F.EI....KIG..E..G...HB.....F.H.....L.HKLII.F.DDBKK.F.HEH.H.KAF.E.FKHJ.I.H..FA.....B.DE.I.DE.LJD.DJFC.....I..L.KIHD...A.BB..C....J.G.EEF.D.H.B.FG..G.HB.I..GID.I...C....CBF...C..CI....II.LJHHG..BA..D.BGEA..K..FK.FK.F..LCCE...D...IIF....KF...G.FID..LD...E.F.KL.FFK.EFFCLE.J..F..J.FC.F.IJ..HD.A....GEG..E..CF..C.....BH..B.....L.GBL..KK"

Returns: "BAKABLABKKACAIAFABAHABABACFHAIKCKJKADEAEFDAFABAJDABJAHAIBABABEBBDABABACBAEIABFABEABDJKABABIDAIACBAIAIABDKEIJABACIALABCABALKABABEABGKABAGJBAKABDHKABABIAKABAKIAGABAHACFLBABDFBAKHAFJABCAKABALHABABABABABAEKABABKABFABABKGABHABCABABFBABAJKABLCAJCBAJABABAIACBAFAEAFAKACDLLBAAHAKCABABJABIABAFFCAJKIABAEAIABABAJABCAKAKJEBGABGGKLEABABFHABLBABABGAHABABFABABABAJABJBLBABACFAKAFABABEIKABABFABABABABGDAFABACABDABAGAGABAEGJADABEAJLHCHIEABLACBABEBDDLDGAIABGAIEKDFEDGAIIAEAJGJFAHACBABKAEABEJKABAKAHAIJAGABHALADABGABABABABDFABABDABABJAHGKLBAKABIEEAHEABAGABFFAGAIBCAFABABABLHKABHLADIEGBABAGAFAEAFAFKABLFABJAIABFLDBADIABABDCDEABCABABABABLABABABJABABCALAJAEBJAFABGABJABFCAIABAFCABDADABLAGAGDABJEGABDLBDABABABCBABKADABHADLABLALFFLABIABAFABAKGEABABABABACKABDCABCAFCAHADHDBBCBABFABJABLIJLAHABABJGBAEABELDABKABLABABDAGABABLACADEHAIJEHABABABKDAIBDABABDABFBADHBACFAICABJEDABABAGIABHIAKABAJLACBAABABJABAFJABAEJAKGAGABABABAEADKABABEAGDLHABAEABABAHAJEHAHEIJHCAGABABGABAECEFKHAJADADIFBABABABABABAFABKLKDBABABABAJDCHALGABABABLAJABABABHAFLFIAGCAFAIABAFAEAGAJEBAHDAHCABLABAFAKEFBGGAKABGEBABIADABEIKFABJGABLALALAGAJCJABCHGALAIABABABAGAGGAFADLLAHEFACBALABEABABABACCABACDACABAKABAHKABABJDKJHLIABAGABABABABJABFLEGLABEFHCAFEABDAKCIFABDABELAJLAHACABAGABFABABHBALABGABDABABABAGABADABABCADABABJAEGBBDCJIIAHGAKLLADABIADKCABAEJHJABAJCAFEJFABKEACECHABFABCABAFACJACALALCABCAHADCAAJAIAFDFABABABDDABECHABKEAKABABABLHABAGIHDHABFADHBABABABABCAGABAJEJAEBLIFKBALBAHAHBABFAGJFBABKABACKGAHDABABALAIBABJBABDAIABAGIAJAFAGIEIACGAEAFAIBABIDABAKDACABAEJAFEIBABJAIFABCIACBFABACDABALJCAJABABJJAIAGACLAGKHABDABABABABIIACELABIABABAGABABAHFABAJABABLABABABAJAHECFADADFABDHDABHABIABGAJEJELAFABABLDACBCBABAIFAIJAGAJIABABABAKKJAGABEABAJIAEBAELABABABABAEDABABABABABCHBFABAHACACBHBACDALLABABABABGABAGABKABDABAIHIADABABAKACJABABEABAEABJIABACBAEABJLFABABALFABABABABCABFEABGABEACABKBAGABBBABABHABAIAFAIAEAKAGABABEBIAFABABABAEABHABABAEAEABABABABALGABDAJEFAGACABABCABJICACAGJIDAJABLABKKGABCABADAEHBADABAKJHAKAJCJABIJLHKABAHACABABAIABAGAECGCAKAGDABAFABABAEACEADAIAEFABHABABAGBLABIAJLCBABABCAGACCABAFAEIABABKIGABEABGABAHBABABAFAHABABALAHKLIIAFADDBKKAFAHEHAHAKAFAEAFKHJAIAHABFABABACBADEAIADEALJDADJFCABABAIABLAKIHDABCACBBABCABABJAGAEEFADAHABAFGABGAHBAIABGIDAIABACABABCBFABACABCIABABIIALJHHGACBABADABGEABAKABFKAFKAFABLCCEABADABAIIFABABKFABAGAFIDABLDABAEAFAKLAFFKAEFFCLEAJABFABJAFCAFAIJABHDBABABAGEGABEABCFABCABABABHACBABABALAGBLABKK"
2

"..B..B...B.."

Returns: "BABAABABABAB"
2

"..B"

Returns: "BAB"
1

"......."

Returns: "AAAAAAA"
2

"....B..."

Returns: "BABABABA"
2

".A"

Returns: "BA"
2

"....B.."

Returns: "BABABAB"

Statistics

Problem Statement for "MaxDistinctPairs"

Problem Statement

Definition

Constraints

Examples