-ous ffff ffss fftf fmss fofo fomo fomt foof foom foos foot foso foss fost fotm foto fots fott fous fout fsfo fssf ftos fuff fufu fumo fums fuso fuss fust fusu futo futs futu mfou mftf mmff mmmm mmms mmst mmsu mmts mmus moff mofo mofu momo moms momu moos moot moso moss most mosu motm moto mots mott motu mouf mous mout msff msfs msft msmm msms msmu mssf mssm msst msts msus mtff mtom mtss mtst mtts muff mufu mumm mumo mums mumu muos muso muss must musu muto muts mutt mutu muut off- offo offs offu ofst ofus omo- omoo omuo omus ooff oofs ooms oooo ooos oost oots oous osm- osmo osoo osos osso ossu osts osum oto- otof otoo otos otso otsu otto otts ottu otus ouff oust out- outo outs ouu- s-os sfmm sfos sfss sfsu sfts smof smos smot smss smtu smus smut sofo soft somm somo soof soom soos soot soso soss sost sotm soto sots sotu souf soum sous sout ssot sssf sssm ssss ssts stfu stms stmt stof stom stoo stos stot stou stsf stsm stss stuf stum stus stut suf- suff sufs sufu sum- sumo sums sumu suos sus- suso suss sust susu suto sutu suum suus t-mo tfot tfss tmos tmou tmtt toff tofo toft tofu tomm tomo toms tomt toof toom toos toot toso toss tost tosu totm toto tots tott toum tous tout tsfm tsom tsos tsou tssf tssm tsst tstm tsts tsum ttff ttms ttss tttt tuff tufm tufo tuft tufu tums tumu tuos tusm tuss tust tuto tuts tutt tutu tuum tuuo ufms ufos umff ummo umms umsu umts umus umut uofm uofo uomo usfs usmm usms usos ussf usss usst ussu ustm usto usts usus utfo utto uttu uutf uuuu