aaaaacacaaaaabcabcaaabaaaabcbbcccaaaabaaabbbaaabaabbaaaccaacaabbaacaacaacaccbaacbaccaabaacbbaaaabaabaccbabaabbbabaacbcabaabababbcbaabababccaabacbaabbaccabbabbbbbbbabbbcbbabbcabacaabbccabcabbbbcbabcbaabcbacbacabcbbcbabccbccacaabcbaaacaacabcccabcacacacacbaacbbaacbbbcacbccaccccaaabbaabbcbcbbaabbccbbbabbabcabbababccabacabbbacbaacbabaccacbbaaacacbbaabbaaccbbababcbbabccbcbbabbacaacbbbbabbbbbbcabbbcccbbbbcaabbcbbcbbcbbcbccabccacccbaabccbbcccaacabccbaacabcacabccacccbcbacaccacbaaccacbbabcbbbacbbbccbbbcbbcacbbcbccbcababaabcbccaaabcbccbccaaccccccabbacccabbbcbccabcbabccccaccbabbcccccbbaccaccbcabccccbccabcccabccccc