1-10 CBCCA BABAA 11-20 CCBCC ABACB
21-30 ACABB ABCCA 31-40 CBACB CBBCC
41-50 ACCCB BBBBA 51-60 BABCA CCCBB(https://www.daowen.com)
61-70 BCACC BCBBC 71-80 BBCCA ABCAC
81-90 ACBAC CBCCC 91-93 BCB
