tsugq ssug rsugqh qsugq psug
41tg 31tgqh 21tgq 11tg 01tgqh
fbtgqh ebtgq dbtg cbtgqh bbtgq
qksgq pksg oksgqh nksgq mksg
1trg 0trgqh ztrgq ytrg xtrgqh