mmmm mmms mmst mmts momo moms moos moot moov moso moss most motm moto mots mott movt msmm msms mssm msst msts msvs mtom mtss mtst mtts mtvs omo- omoo omov ooms oooo ooos oost oots osm- osmo osoo osos osov osso osts oto- otoo otos otov otso otto otts ovms ovo- ovoo ovot s-os s-vt smos smot smss somm somo soom soos soot soso soss sost sosv sotm soto sots sovo sovs ssot sssm ssss ssts ssvm st-v stms stmt stom stoo stos stot stsm stss stvs t-mo tmos tmtt tomm tomo toms tomt toom toos toot toso toss tost totm toto tots tott tovo tsom tsos tssm tsst tstm tsts ttms ttss tttt tvmt tvos tvss tvtv vmos voms voom voot voso voss voto vsto vvvv