604391T
1A 2C 3D 4A 5B 6B 7B 8C 9D 10C 11 A 12 B 13A 14 B 15B 16 A 17A 18 B 19A 20C 21 A 22-30对
ACDAB
BBCDC
ABABB
AABAC
A
√√√√√√√√√
ACDABBBCDCABABBAABACA
4D5D6D7B8C9B10A11C12B15B18C19B21A
23对25对26对28对29对
4A5C6B9A10C11A18B19A
5B9D23对