第3个回答 2009-06-21
CBABBCABAC
CCDAC
BCADB
CABDC
BCBCBDABDD
ABDBD
BDBBD
CBBAC
BADCCCACAD
DDDDD
BDABC
BCBBD
ABCCCABBAB
BDDCB
CAABD
BDADB
BACADCDBDC
CBDDA
CDBCD
DBAD
DCBACDABDC
BCBDA
BBADD
DBCDB
CBCBAAABDC
DBBBC
DCDBD
CACBB
ADBDCACBBA
DBCAA
CADBA
CBCBD
BAAACBBAAC
CADCB
BCBD
DACBD
BCCDABDDBA
CACBD
BCBA
CAACB
BABACCABCC
BDBCA
CDBAC
DBDBB