eeee eete eetu eext epee eper eppp eprp epte epxp er-x erer eret erpe erre ertu erur etee eter etre ette ettu etux euer eur- eure eurt exer expr expt exrx exte extr peep peer peet pepe per- pere perp perr pert peru pete petr pett peur peut pper pppp ppru pptt ppur pre- pree prep pret preu prex prtp prtr prue prut pruu pter pu-e puer puet pueu pupe pupu pur- pure purp purr puru put- pute putt putu puxe reep reet repe repp repr rept repu rere rert reru rete retr rett reue reup reut reuu reux rexx rpet rrrr rtee rtex rttp ruer ruet rupe rupp rupt rure rurp ruru rute rutt rutu teer teet tepe tepp tepu ter- tere terp terr teru tete tetr tett tetu tetx teut text tper tppp tppr tpte tptp tptr tput tre- tree tret treu trex trpe trpp trte trtr true trut truu trux tter tttt tuer tuet tupe tupu ture turp turr turt turu tute tutt tutu txtr u-rp uext uppe uppp uppu upup ure- uret urex urre urte urup urur urut utep uter uttu uuuu uxue xeer xer- xert xexe xper xrep xtep xuxu xxxx