A.112.213.12.23 B.210.123.23.12 C.23.123.213.23 D.156.123.32.12
A.B和B B.C和B C.A和C D.C和A
A.202.12.87.15 B.159.128.33.15 C.16.2.3.8 D.126.256.33.78