-ous mmmm mmms mmor mmst mmsu mmts mmus momo moms momu moor moos moot moro mors mort moru moso moss most mosu motm moto mots mott motu mour mous mout mrtm mrts mrtt msmm msms msmu msor msrt mssm mssr msst mstr msts msus mtom mtor mtrr mtss mtst mttr mtts mumm mumo mums mumu muos muro murr murs murt muru muso muss must musu muto muts mutt mutu muut omo- omoo omor omro omuo omus ooms oooo ooos oort oost oots oous ormo oro- orom oror oros orot orro orrs orso orsu orto orts orum orus osm- osmo osoo osor osos osro osso ossu ostr osts osum oto- otoo otor otos otro otrs otso otsu otto otts ottu otur otus our- ouro ours ourt oust out- outo outs ouu- rmst rmtu romm romo roms room roor roos root roro rort roru roso ross rost roto rotr rots rott roum rous rout rrrr rrum rsos rsts rstu rsum rtms rtss rtts rumm rumo rums rumt ruro rurs ruru ruso russ rust rusu ruto ruts rutt rutu s-os smos smot smrt smss smtu smur smus smut somm somo soom soor soos soot sorm soro sorr sors sort soru soso soss sost sotm soto sots sotu soum sour sous sout sros srtr ssot ssrm ssrs sssm ssss ssts stms stmt stom stoo stor stos stot stou stro strs stru stsm stss sttr stum stur stus stut sum- sumo sums sumu suor suos sur- suro surr surs surt suru sus- suso suss sust susu suto sutu suum suus t-mo tmos tmou tmro tmtt tomm tomo toms tomt toom toor toos toot torm toro torr tors tort toru toso toss tost tosu totm toto totr tots tott toum tour tous tout trms trmu trom troo tros trot trou trst trtr trus trut truu tsom tsos tsou tssm tssr tsst tstm tsts tsum ttms ttss tttt tums tumu tuor tuos turm turo turr turs turt turu tusm tuss tust tuto tuts tutt tutu tuum tuuo ummo umms umor umsu umts umus umut uomo uor- uro- urom uroo urso urss ursu urts urum urur urus urut usmm usms usos ussr usss usst ussu ustm usto usts usus utor utto uttu uuuu