mmmm mmms mmst mmts mmxx mmyy momo moms momy moos moot moso moss most mosy motm moto mots mott moty moxo moxy moyo msmm msms mssm msst msts mtom mtss mtst mtts mymy myo- myos myot mys- myss myst myto myx- myxo myxy myys omo- omoo omox omyt ooms oooo ooos oost oots ooty osm- osmo osoo osos osso ossy osts osyt oto- otoo otos otoy otso otto otts oxo- oxos oxox oxxo oxy- oyss oyst s-os smos smot smox smoy smss smty somm somo somy soom soos soot sooy soso soss sost sotm soto sots soxs soyo soys soyt ssot sssm ssss ssts stms stmt stom stoo stos stot stox stoy stsm stss stys styx sym- syms syso syss syst sytt syxt t-mo tmos tmtt to-y tomm tomo toms tomt tomy toom toos toot toso toss tost tosx tosy totm toto tots tott toty tox- toxo toxs toxt toym toyo toys toyt tsom tsos tsoy tssm tsst tstm tsts tsys ttms ttoy ttss tttt ttys tyss tyst tyto tytt tyty tyxt xmms xmos xoom xoxo xoyo xxxo xxxx xxxy xyst ymts yomo yoot yoso yost yott yoyo yyyy