rrat rrrr rtai rtca rtcc rtce rtee rtei ruba rubb rube rubi rubu ruca ruce ruci ruct ruer ruet ruit rura rurc rure ruri ruru ruta rute ruti rutt rutu taa- taar taat taba tabb tabc tabe tabi tabu taca tacc tace taci tact taec taer taia tair tait tara tarb tarc tare tari tarr tart taru tata tatb tate tati tatr tatt tatu taua taub tauc taue taur taut tbar tbca tbcb tbcc tbce tbit tbrb tbta tcca tccc tccu tctc teac tear teat teba tebu teca tecr tect teec teer teet teia teic teie teir teiu ter- tera terc tere teri terr teru teta tete teti tetr tett tetu teut tiaa tiab tiar tiba tibi tibu tica ticc tice tie- tiea tiee tiei tier tiet tiit tiiu tira tirb tire tiri tirr tiru tita titc tite titi titt titu traa trab trac trae trai trat trau trca trcc tre- trea trec tree trei tret treu tri- tria trib tric trie trit trra trtc trte trtr trub truc true trut truu ttab ttbb tter tttt tuae tuar tuat tuba tubb tube tubr tubu tuca tucc tuei tuer tuet tuit tuiu tura turb turc ture turi turr turt turu tuta tute tuti tutt tutu u-ie uabc uaca uair uarc uart uaru uata uatu uaua ubac ubar ubba ubbe ubbi uber ubet ubic ubii ubir ubit ubra ucai ucar ucat ucbc ucca ucci ucea ucrc ucua ucut ueba ueir uica uira uirr urac urai urat urau urba urbe urbi urca urci ure- urea uret uria urib uric urie uriu urra urre urri urte urur urut utac utai utau utec uter utia utri utti uttu uuri uuta uuuu