function A = test_forge(M,B,C,D,E,F,G,H,I)
z1 = [norm(M-B,'fro'),norm(M-C,'fro'),norm(M-D,'fro'),norm(M-E,'fro')];
z2 = [norm(M-F,'fro'),norm(M-G,'fro'),norm(M-H,'fro'),norm(M-I,'fro')];
A = [z1,z2];

