mmmm mmms mmst mmts momo moms moos moot moso moss most motm moto mots mott msmm msms mssm msst msts mtom mtss mtst mtts omo- omoo ooms oooo ooos oost oots osm- osmo osoo osos osso osts oto- otoo otos otso otto otts s-os smos smot smss somm somo soom soos soot soso soss sost sotm soto sots ssot sssm ssss ssts stms stmt stom stoo stos stot stsm stss t-mo tmos tmtt tomm tomo toms tomt toom toos toot toso toss tost totm toto tots tott tsom tsos tssm tsst tstm tsts ttms ttss tttt