n2 js 1 av-j n1 1 n1 n2-jn 1 n1 n1 10 j av-j 1 js n1 2 n1 js 1 np1 crd 1 j n2 2 n1 np1 1 crd n1 1 n2-jn n2 1 n2 j 2 n1 n2 1 n2 n1 1 j n1 1 np1 n1 1 n1 j 3