1-10 CAACC AABBC 11-20 ACBCC ACCBC
21-30 BBBCB BCCCA 31-40 CACCA BABBC
41-50 BBCCA ABCCC 51-60 AABCC BABAC(https://www.daowen.com)
61-70 CAACC BCBAB 71A
