r2x4py q2x4p p2x4 o2x4py n2x4p
2bx4p 1bx4 0bx4py zbx4p ybx4
dlw4 clw4py blw4p alw4 9kw4py
ouv4py nuv4p muv4 luv4py kuv4p
z3u4p y3u4 x3u4py w3u4p v3u4