tatr tats tatt tatu taua tauc taul taur taus taut tcca tccc tccu tcga tctc tcts tcul tgcc tgtc tgts tlac tlgc tlrs traa trac trag tral tras trat trau trca trcc trcl trra trst trtc trtr truc trug trus trut truu tsaa tsal tsar tsat tsau tsca tscc tscg tsgt tssa tssg tssr tsst tstc tsts ttss tttt ttul tual tuar tuas tuat tuca tucc tuga tugg tugs tugu tula tull tulu tura turc turg turr turs turt turu tusa tusc tuss tust tuta tutl tuts tutt tutu uaca uarc uars uart uaru uasa uata uatu uaua ucal ucar ucas ucat ucca ucla ucrc ucsa ucsc ucst ucsu ucua ucut ugal ugar ugcc ugcg uggs uggt ugra ugta ugur uguu ulaa ular ulas ulcc ulla ullr ulsa ulta ults ultt ulua ulul ulus urac ural uras urat urau urca urga urgu urla urls urra ursa urss ursu urts urur urus urut us-a usaa usac usag usal usar usas usat usca uscc uscg uscs usga uslu usra ussa ussc ussr usss usst ussu usta ustc usts usua usul usus utac utal utas utau utsa utsc utsl uttu utug uulu uuta uuuu