m-o mmm mmo mms mmt mmx mom moo mos mot mox moy msm mso mss mst msx msy mtm mto mts mtt mtx mxs my- mym myo mys myt myx om- omm omo oms omt omx omy oo- oom ooo oos oot oox os- osm oso oss ost osx ot- otm oto ots ott ox- oxo oxt oxx oxy oyo oys smm smo sms smt smx smy som soo sos sot sox soy ss- ssm sso sss sst ssx stm sto sts stt stx sty sxm sxs sxt sy- sym sys syt syx t-x tmm tmo tms tmt tmx tmy to- tom too tos tot tox toy tsm tso tss tst tsx tsy ttm tto tts ttt ttx tty txs txt tym tyo tys tyt xmm xmo xms xmt xmx xom xoo xos xot xox xsm xss xst xtm xts xtx xty xxo xxx xxy xyy ymm ymo yms ymt yom yoo yos yot yox yoy ysm yso yss yst ysy ytm yto yts ytt yxy yys yyt yyy