50
aaba
aaa
abbbbaaba
ababbabbabab
aaababaaba
abbbbbbaabbabbbba
abbbabbbaaababaab
abababababbabaaba
bbbbaaaaa
abbaabbaaaabb
abaaabbaab
ababb
babaabbbbb
bbbbababaabbabababba
aa
aaabaabaabbb
bbaaaaabb
bbabbbaaabbaaababbbab
aabaababaaaaabb
bbaabaab
baaaabbaaabaabbb
babaabbba
baaaaaabaaa
abaabaaaabbbba
bbaabaaaab
abaaaaaaabb
abbabaabaaab
bbbbbabbbbaaa
aabba
baaababa
abbbabbab
aaabbbb
ba
bbabb
a
aaabaaa
abaaaabaaaa
ababaabb
b
b
abbaaabbabaaa
baaaaabbaababaaa
bbaaabbaaab
baabaaaa
abaaababbbbab
bbbbbaaabbabbbaaaab
bbbbaabababba
abbaabaabab
a
baabbababaa