t42n1 s42n r42n1m q42n1 p42n
4d2n 3d2n1m 2d2n1 1d2n 0d2n1m
fn1n1m en1n1 dn1n cn1n1m bn1n1
qw0n1 pw0n ow0n1m nw0n1 mw0n
15zn 05zn1m z5zn1 y5zn x5zn1m