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