A.2,1,-1,+1/2 B.2,0,0,-1/2 C.3,1,1,-1/2 D.3,2,-1,+1/2
A.3,1,+1,-1/2 B.2,1,-1,+1/2 C.3,3,0,+1/2 D.4,3,-3,-1/2
A.n,m B.l,ms C.l,m D.n,l