61rbnu 51rbn 41rb 31rbnu 21rbn
hbrbn gbrb fbrbnu ebrbn dbrb
skqb rkqbnu qkqbn pkqb okqbnu
3tpbnu 2tpbn 1tpb 0tpbnu ztpbn
e3obn d3ob c3obnu b3obn a3ob