11 17
BBAAAACDD BABACCDCAAA BAACBDBBAAB AAAABDADAAA ABABAAADCAB BABCAAAABAC ADADAAAAAAD CBAABACAACB ADAAABAAAAA ABAAAAABA AADAACACAA ABAADBAAAA AAACAABDAA CBABBCAAAAA CBBACDDDACB AAAAAAAAABA CDABABAAAAC 
AABDBAAAA CCAAAAAAAAA ACCCDCAAADB AACAACDDDAB AAADAAAABDA ADDAADABABA ABAAAAAAAAA AAAAAAABAAB AAAAADDAAAA BADADADAA AADDAACAAC BBBCADCAAA ACAAADACBA AADAAAAADBA AAAAAAACAAA AACCAADAAAA AABAABBAAAB