1-10 ABCCB AACCA 11-20 CACAC CBCCB
21-30 BABCC ABCBA 31-40 CCCAB CABBA
41-50 CCABB BCCBB 51-60 BBABC CBCCB(https://www.daowen.com)
61-70 CAACA CACBC 71-80 CBABA CCCCC
81-85 CCCAC
