A.p->next=p->next->next B.p=p->next C.p=p->next->next D.p->next=p
A.2,3,5,8,6 B.3,2,5,8,6 C.3,2,5,6,8 D.2,3,6,5,8
A.10,15,14,18,20,36,40,21 B.10,15,14,18,20,40,36,21 C.10,15,14,20,18,40,36,2l D.15,10,14,18,20,36,40,21