B vc

B vcB vcB vcB vcB vcB vc
B vcB vcB vcB vcB vcB vc
B vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vcB vc