N 1 x 0 x

N 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 x
N 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 x
N 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 xN 1 x 0 x