n1 n1 9 n1 crd 2 j ng1 1 n1 jc 2 np1 crd 1 j n2 1 n1 ng1 1 j crd 1 crd n1 1 ng1 n1 2 crd j 3 j j 1 jc n1 2 n2 j 1 j n1 3 n1 j 2