eeee eele eete eetu elee eler elet elle ellu elte elue elul erel erer eret erle erll erre ertl ertu erur etee etel eter etre ette ettu euer eule eur- eure eurt le-u leel leer leet lele lell lelu lere lert lete lett leur llet lleu llll lrrr ltee lttr luer lule lull lulu lure lurt lute reel reet rele rell relt rere rert reru rete retr rett reue reul reut reuu rlee rleu rrle rrrr rtee rtle rtlt ruel ruer ruet rule rull rure ruru rute rutl rutt rutu teel teer teet tel- tele tell telt telu ter- tere terr teru tete tetr tett tetu teut tre- tree tret treu trte trtr true trut truu tter tttt ttul tuel tuer tuet tule tull tulu ture turr turt turu tute tutl tutt tutu uele uell ulee ulle ullr ultt ulul ure- uret urle urre urte urur urut utel uter uttu uulu uuuu