toud4 soud roud4x qoud4 poud

4xtd 3xtd4x 2xtd4 1xtd 0xtd4x

f7sd4x e7sd4 d7sd c7sd4x b7sd4

qgsd4 pgsd ogsd4x ngsd4 mgsd

1prd 0prd4x zprd4 yprd xprd4x