參考答案：
1-5??? BCBAB
6-10?? ACCCA
11-15? BCABC
16-20? BCAAA
21-25? BACBC
26-30? ABBBA
31-35? ABBCB
36-40? ACABC
41-45? CBAAB
46-50? CACAA
51-55? BCBBA
56-60? CCAAC
61-65? BAACA
66-70? CABAC
71-75? BCBAB
76-80? ACBBB
81-85? CCAAA
86-90? BACAC
91-95? ACCAC
96-100? ABACB