reen reet rena rene renn rent renu rera rere rert reru reta rete retr rett reue reut reuu reux rexx rnbr rnnt rnut rrat rrna rrrr rrun rtan rtca rtcc rtce rtee rtex ruan ruba rubb rube rubu ruca ruce ruct ruen ruer ruet runa runc rune runn runt rura rurc rure ruru ruta rute rutt rutu ruun taa- taan taar taat taba tabb tabc tabe tabu taca tacc tace tact taec taen taer tana tane tann tant tanu tanx tara tarb tarc tare tarn tarr tart taru tata tatb tate tatr tatt tatu taua taub tauc taue taur taut tax- taxa taxe taxt tbar tbca tbcb tbcc tbce tbrb tbta tcca tccc tccu tcnn tctc teac tean tear teat teba tebu teca tecr tect teec teen teer teet tena tenb tenc tene tenn tent tenu ter- tera terc tere tern terr teru teta tete tetr tett tetu tetx teut texa text tnbc tnca tncc tneb tnut traa trab trac trae tran trat trau trax trca trcc tre- trea trec tree tren tret treu trex trna trra trtc trte trtr trub truc true trun trut truu trux ttab ttbb ttcn tten tter tttt tuae tuan tuar tuat tuba tubb tube tubr tubu tuca tucc tuen tuer tuet tuna tunb tunc tune tunn tunu tura turb turc ture turn turr turt turu tuta tute tutt tutu txaa txcn txen txtr uabc uaca uarc uart uaru uata uatu uaua ubac ubar ubba ubbe uber ubet ubra ucan ucar ucat ucbc ucca ucea ucrc ucua ucut ueba uext unaa unac unan unar unat unau unbe unca uncc unce unct uneb unec unee unen uner unna unne unra untb unte unut urac uran urat urau urba urbe urca ure- urea uret urex urna urne urra urre urte urun urur urut utac utan utau utec uter utne uttu uuen uuta uuuu uxue xaar xace xact xana xara xare xate xbar xbee xbra xcat xeer xen- xena xene xenn xenu xer- xera xert xexe xnee xnet xtar xtea xtra xuan xura xuxa xuxu xxxx