3
AAB
ABB
BBB
4
AABB
ABBB
BBBB
BBBB
4
AABB
ABBB
BBBD
BBBB
10
AAAAAAAAAB
AAAAAAAABB
AAAAAAABBB
AAAAAABBBB
AAAAABBBBB
AAAABBBBBB
AAABBBBBBB
AABBBBBBBB
ABBBBBBBBB
BBBBBBBBBB
10
AAAAAAAAAB
AAAAAAAABB
AAAAAAABBB
AAAAAABBBB
AAACABBBBB
AAACCBBBBB
AAABBBBBBB
AABBBBBBBB
ABBBBBBBBB
DBBBBBBBBB
20
AAAAAAAAABAAAAAAAAAB
AAAAAAAABBAAAAAAAABB
AAAAAAABBBAAAAAAABBB
AAAAAABBBBAAAAAABBBB
AAAAABBBBBAAAAABBBBB
AAAABBBBBBAAAABBBBBB
AAABBBBBBBAAABBBBBBB
AABBBBBBBBAABBBBBBBB
ABBBBBBBBBABBBBBBBBB
BBBBBBBBBBBBBBBBBBBB
AAAAAAAAABAAAAAAAAAB
AAAAAAAABBAAAAAAAABB
AAAAAAABBBAAAAAAABBB
AAAAAABBBBAAAAAABBBB
AAAAABBBBBAAAAABBBBB
AAAABBBBBBAAAABBBBBB
AAABBBBBBBAAABBBBBBB
AABBBBBBBBAABBBBBBBB
ABBBBBBBBBABBBBBBBBB
BBBBBBBBBBBBBBBBBBBB
1
A
2
AA
AA
3
ABC
DEF
GHI
0