621012
1.B 2,C 3,B4,B
你是个狠人
b a d a d ? c d a b
acd ac cd abcdef abcd bcd abcd abcd
abcdef abc
vxxxxvvvvv
cacbaa
bc abcd
vvxvx
acbdbbdcdcbcacc
bbaaccdbcddbbaa
cbdcaabadc
xvvxx