✔ 最佳答案
1990 AAAEA EEBCC DBBDC DEACC CBDAA EEADB CCEAC DDBCE BAEBB EECDD CBDA
1991 AEAEE CBEDA CACDA BDDCB ACBDC EEDBA CEDDD CCEEA EBDCD EABBB BCBA
1992 AAEDA AAAED ECCBB ABBDD BDDCE DBAEB EDECE EEEBB ADCCC BADCB ADCC
1993 CABEA BBBCD BABBE AEACB ACCCC BBCDC DCAAD EDBDA DDDDE BECAE EDAE
1994 BCCBD EAECB EADDA AAEAC DBEDB AACEB BCCBA DAEAC CDCDB EDCBE BEDC
1995 DDDAE CCDEB CCEAB ACCED CBDCB CBEDE DBDED EABEE AACBE ECBCA ABBA
1996 DECCB BAECD CDCEA DDEEB BCBBA ABEEA ACDBC CCAEA ADECD BBDAD ACEB
1997 BADDB EBDAC BACEC AEBDE CDDCE EEABB CDBAC AECCA CAEED DADAB DCBC
1998 DBACE DBBDE DBBCE EBBDC CAEAE BBCCA CEAAA ECAAA CDDCE EDCDD CBEB
1999 ABDBE CADAD CCCBE ABDBB AEAAD DCBBA EDCEE CBEEE CBDED ABECC AACD
2000 EACEB BCBDA EBAAC CEAAE ECDDB CDDAD BBAAD CEDEB CDCAE CBBDA BECD
2001 ACAEB DABDE BBEAC CACEC CACDB ADECB EBEDB AEACB DDBED DADAB DEEC
2002 DBADB AADDB CCDAA ABCDA CABCB DBBBD ACABC CDDBC CBCDC AADBB ABDC
2003 CCAAC ADDCD BDDAD DBBAC CBBBC BACAA ABBCD CBCDA CCDDB BAADC BADB
2004 CACAC CDDAB BBCCB ACDBC BDBDC ABDDA BABBA CDDAB CCDAA AADDA BDCC
2005 BDADB DDCAD BDCCD BDCBC CCBCA CBCCD ACDAD ADADA CABAA BBBAB BCBA
2006 BCAAA BADAB CCDDC AABCA DDCBD DCCDA DBCBC BBACB CDAAC BBDDA CBBD
2007 ADAAD BBDAB DDABC AABAD DDBDC BDBCC DAACB CCDBA ACBCC DBAAC CCBD
2008 BAABC CCDAA CACDC BCCCC DCAAA DBDBC DDBDA ADCAA BBBBB BBDDA BDDA
2009 BDDAA ABDBC BCCDD ABBAC DBBCD AACAD BADCC CDCDD ABAAB CBBCC BDCA
2010 CBDBD CDACD BDADB ABCCA BDABA CCDBC DBCAA ACACD ACBCB BDDBC ADAB
2011 AADBA CAABC BBCBA CCBDD DCBCA ACCBD DDABD DDBCD AABCC DADCB BCAB