✔ 最佳答案
2003 CDBCB ADBAB CDBAA *ADAA ADBCB DBDBB AACDC CBBDC ABACD DCBAC ABDCB ABBDC
2004 CBCAA AACDA BCCBA AADAA BDCCB CBDBD CDA*C BCDBB CCADA BBCDD DABDD BDBAC
2005 CABAA DCCBD CADDC CABBA DBDDB DDBDD BBAAC CDABC
ACBBC ADACC
2006 DBAAC CBCBA BCBCC CDDAD CABBA DDCCA DDAAD ABBBD ACDBC DBCAD
2007 AADCD DAACC BBCAC DBDDB BCCDC CADAB BDAAB CABDB
CACDD DABCB