stia stic stid stig stis stit stsi stss sttc sttd stuc stud stug stus stut suas suat suc- succ suci sucs suda sudd sudi suds sug- suga sugg sugi suid suig suis suit sus- susa susd susi suss sust susu suta suti sutu suus taa- taag taas taat taca tacc taci tacs tact tada tadg tads taga tagg tagi tags tagu taia taig tais tait tasa tasc tasi tass tast tasu tata tati tats tatt tatu taua tauc taus taut tcad tcca tccc tccu tcdd tcga tctc tcts tdac tdis tdss tgcc tgtc tgts tiaa tias tica ticc tics tidc tidd tids tiga tigi tigs tiit tiiu tisa tisi tiss tist tita titc titi tits titt titu tsaa tsai tsat tsau tsca tscc tscg tsgt tsia tsid tsig tsis tssa tssg tssi tsst tstc tsts tsui ttss tttt tuas tuat tuca tucc tudi tudu tuga tugg tugs tugu tuig tuis tuit tuiu tusa tusc tusd tusi tuss tust tuta tuti tuts tutt tutu uaca uasa uasd uata uatu uaua ucad ucai ucas ucat ucca ucci ucdc ucdd ucsa ucsc ucsd ucst ucsu ucua ucut udaa udad udas udau udca uddi udds udic udid udig udsd udts ugcc ugcg uggs uggt ugia ugis ugta uguu uica uisd uist uits us-a usaa usac usad usag usas usat usca uscc uscg uscs usda usdc usds usdt usga usia usis ussa ussc usss usst ussu usta ustc usti usts usua usui usus utac utai utas utau utia utid utis utsa utsc utti uttu utug uusi uuta uuuu