eeee eete eetu epee eper eppp eprp epte eptv erer eret erev erpe erre ertu erur eruv erve etee eter etre ette ettu euer eur- eure eurt ever evet evre peep peer peet peev pepe per- pere perp perr pert peru perv pete petr pett peur peut pper pppp ppru pptt pptv ppur pre- pree prep pret preu prev prtp prtr prue prut pruu pter pu-e puer puet pueu pupe pupu pur- pure purp purr puru put- pute putt putu reep reet reev repe repp repr rept repu rere rert reru rete retr rett reue reup reut reuu reve revp rpet rrrr rtee rttp rtve ruer ruet rupe rupp rupt rure rurp ruru rute rutt rutu ruve ruvu rver teer teet teev tepe tepp tepu ter- tere terp terr teru tete tetr tett tetu teut tper tppp tppr tpte tptp tptr tput tre- tree tret treu trev trpe trpp trpv trte trtr true trut truu tter tttt tuer tuet tupe tupu ture turp turr turt turu tute tutt tutu tver tvrr tvtv u-rp uppe uppp uppu uptv upup ure- uret urre urte urup urur urut urve utep uter uttu uuuu uver uvvu veep veer veet vepe vepr ver- vere vert vete vetr veur veve vret vtpr vurp vurt vutv vver vvvv