4r4x 3r4xn0 2r4xn 1r4x 0r4xn0

f13xn0 e13xn d13x c13xn0 b13xn

qa3xn pa3x oa3xn0 na3xn ma3x

1j2x 0j2xn0 zj2xn yj2x xj2xn0

ct1xn0 bt1xn at1x 9s1xn0 8s1xn