6,18,(),78,126。
A.40
B.41
C.42
D.44
:6,18,(),78,126。 A.40 B.42 C.44 D.46
:6/28,21/98,18/84,9/42,()A.25/60 B.12/44 C.12/56 D.25/78
6/28,21/98,18/84,9/42,() A.25/60 B.12/44 C.12/56 D.25/78
6,18,(),78,126。 A.40 B.41 C.42 D.44
6,18,(),78,126。A.40B.41 C.42 D.44
6,18,(),78,126A.40 B.41 C.42 D.44