参考答案：
1-10:CBBBC DBCCD
11-20:AACCA BBBDC
21-30:ABABB BCCCD
31-40:CBABC DADAD
41-50: CBBDD DCADA
51-60: ABBAD ABBDA
61-70DBADB DBCBD
71:ACDE, 72:BC,73:BCE,74:ABCD,75:ACE,
76:BD,77:ABCE,78:ABDE,79:ADE,80:BE,
81:ABC,82:ABCD,83:ACE,84:BD,85:AC,
86:AB,87:ADE,88:BDE,89:CD,90:ABCD,
91:ABC,92:ABD,93:AE,94:AD,95:AD,
96:ABCE,97:ABCE,98:DE,99:AB,100:ADE,