611245
1B,2B,3D,4B,5C,6B,7A,8A,9A,10D,11A,12A,13B,14C,15C,16C,17A,18D,19A,20A
BBDBC BAAAD AABDC CADCA
16C
3D
8A
12A
14C
18D
1A,2D,4C,5A,6A,7D,9B,10A,11B,13A,15D,16D,17D,19B20B