mmmm mmms mmor mmst mmts momo moms moor moos moot moro mors mort moso moss most motm moto mots mott mrtm mrts mrtt msmm msms msor msrt mssm mssr msst mstr msts mtom mtor mtrr mtss mtst mttr mtts omo- omoo omor omro ooms oooo ooos oort oost oots ormo oro- orom oror oros orot orro orrs orso orto orts osm- osmo osoo osor osos osro osso ostr osts oto- otoo otor otos otro otrs otso otto otts rmst romm romo roms room roor roos root roro rort roso ross rost roto rotr rots rott rrrr rsos rsts rtms rtss rtts s-os smos smot smrt smss somm somo soom soor soos soot sorm soro sorr sors sort soso soss sost sotm soto sots sros srtr ssot ssrm ssrs sssm ssss ssts stms stmt stom stoo stor stos stot stro strs stsm stss sttr t-mo tmos tmro tmtt tomm tomo toms tomt toom toor toos toot torm toro torr tors tort toso toss tost totm toto totr tots tott trms trom troo tros trot trst trtr tsom tsos tssm tssr tsst tstm tsts ttms ttss tttt