stca stcc stcs stcu stia stic stig stio stis stit stoa stog stoo stos stot stou stsi stss sttc stuc stug stus stut suas suat suc- succ suci sucs sug- suga sugg sugi sugo suig suio suis suit suos sus- susa susi suso suss sust susu suta suti suto sutu suus taa- taag taas taat taca tacc taci taco tacs tact taga tagg tagi tago tags tagu taia taig taio tais tait taoa taos taou tasa tasc tasi tass tast tasu tata tati tato tats tatt tatu taua tauc taus taut tcca tccc tccu tcga tcos tctc tcts tgcc tgtc tgts tiaa tiao tias tica ticc tico tics tiga tigi tigs tiit tiiu tios tiou tisa tisi tiso tiss tist tita titc titi tito tits titt titu toas toat toau toca toci toco toga togo togs togt tois toit tooa toos toot tosa tosc tosi toso toss tost tosu tota totc toti toto tots tott toug toui tous tout tsaa tsai tsao tsat tsau tsca tscc tscg tsgt tsia tsig tsis tsoi tsos tsou tssa tssg tssi tsst tstc tsts tsui ttss tttt tuao tuas tuat tuca tucc tuco tuga tugg tugs tugu tuig tuis tuit tuiu tuos tusa tusc tusi tuss tust tuta tuti tuto tuts tutt tutu tuuo uaca uaoc uasa uata uatu uaua ucai ucas ucat ucca ucci ucio ucos ucsa ucsc ucst ucsu ucua ucut ugao ugcc ugcg uggo uggs uggt ugia ugis ugos ugta uguu uica uist uits uocc us-a usaa usac usag usas usat usca uscc uscg usco uscs usga usgo usia usis usoc usog usoi usos ussa ussc usss usst ussu usta ustc usti usto usts usua usui usus utac utai utas utau utia utis utsa utsc utti utto uttu utug uuoc uusi uuta uuuu