trec tree treg trem tret treu trge trma trmu trra trtc trte trtr truc true trug trut truu tter ttma tttt tuae tuam tuar tuat tuca tucc tuer tuet tuga tugg tugu tuma tume tumu tura turc ture turg turm turr turt turu tuta tute tutt tutu tuum uaca uamc uarc uart uaru uata uatu uaua ucam ucar ucat ucca ucea ucmc ucrc ucua ucut ugar ugcc ugcg uggt ugra ugta ugur uguu umaa umac umag umar umec umer umet umma ummg umra umut urac urat urau urca ure- urea uret urga urge urgu urma urra urre urte urum urur urut utac utau utec uter uttu utug uuta uuuu