10   40
A         CACACAACCAAACAAACCACAAAAAAAAAAAAAAAAAAAA
B         AAACCACACACACAAACCCAAAAAAAAAAAAAAAAAAAAA
C         ACAAAACCAAACCACCCACAAAAAAAAAAAAAAAAAAAAA
D         AAAAACACAACACACCAAACAAAAAAAAAAAAAAAAAAAA
E         AAACAACCACACACAACCAAAAAAAAAAAAAAAAAAAAAA
F         CCCAAACACCCCCAAAAAACAAAAAAAAAAAAAAAAAAAA
G         ACACCCCCACACCCACCAACAAAAAAAAAAAAAAAAAAAA
H         AAAACAACAACCACCCCACCAAAAAAAAAAAAAAAAAAAA
I         ACACAACAACACAAACAACCAAAAAAAAAAAAAAAAAAAA
J         CCAAAAACACCCAACCCAACAAAAAAAAAAAAAAAAAAAA