upn21m tpn21 spn2 rpn21m qpn21
5ym21 4ym2 3ym21m 2ym21 1ym2
g8l2 f8l21m e8l21 d8l2 c8l21m
rhl21m qhl21 phl2 ohl21m nhl21
2qk21 1qk2 0qk21m zqk21 yqk2