y2un x2unwm w2unw v2un u2unwm
9bunwm 8bunw 7bun 6bunwm 5bunw
kltnw jltn iltnwm hltnw gltn
vusn uusnwm tusnw susn rusnwm
63rnwm 53rnw 43rn 33rnwm 23rnw