a7pr b7pr3 c7pr3d d7pr e7pr3
zxqr3 0xqr3d 1xqr 2xqr3 3xqr3d
oorr3d porr qorr3 rorr3d sorr
dfsr efsr3 ffsr3d gfsr hfsr3
25sr3 35sr3d 45sr 55sr3 65sr3d