d74r e74r2 f74r2x g74r h74r2
2x5r2 3x5r2x 4x5r 5x5r2 6x5r2x
ro6r2x so6r to6r2 uo6r2x vo6r
gf7r hf7r2 if7r2x jf7r kf7r2
557r2 657r2x 757r 857r2 957r2x