av-j n1 1 n1 n2 1 n1 np1 1 n1 n1 1 n1 crd 1 j-jn n2 1 np1 np1 1 j n1 1 n1 av-j 1 crd np1 1 crd n1 1 np1 av-j 1 n2 n1 1 av-j n2 1 n2 n2 1 n2 j 1 np1 crd 1 n2 j-jn 1 n1 j 1 np1 n2 1