-ene eeee eent eete eetu enee ener enne ennu enp- ent- ente entp entr enue enur enut epee epen eper eppp eprp epte eren erer eret erne erpe erre ertu erur etee eten eter etne etnr etre ette ettn ettu etun euer eur- eure eurt n-up neen neep neer neet nene nent nenu nepe nepr nept nere nerr nert neru net- nete nett neue neun neur neut neuu nnnn nnpr nntn nprt npte nptn nren nrpn nter nteu ntnu ntru nttr nuee nuer nune nunn nunt nupe nure nurn nurp nurr nurt nuru nute nutt nutu peen peep peer peet pen- pene penn pent penu pepe per- pere pern perp perr pert peru pete petn petr pett peun peur peut pnet pneu pnpp pntr pnup ppen pper pppn pppp ppru pptn pptt ppur pre- pree pren prep pret preu prnp prtp prtr prue prut pruu pten pter pu-e puer puet pueu pune punt punu pupe pupu pur- pure purp purr puru put- pute putt putu reen reep reet rene renn rent renu repe repp repr rept repu rere rert reru rete retr rett reue reup reut reuu rnnt rntp rnut rpet rppn rptn rrrr rrun rtee rttp ruen ruer ruet rune runn runt rupe rupp rupt rure rurp ruru rute rutt rutu ruun teen teer teet tene tenn tenp tent tenu tepe tepp tepu ter- tere tern terp terr teru tete tetr tett tetu teut tnut tper tppp tppr tpte tptp tptr tput tre- tree tren tret treu trpe trpn trpp trte trtr true trun trut truu tten tter tttt tuen tuer tuet tune tunn tunu tupe tupu ture turn turp turr turt turu tute tutt tutu u-rp unee unen uner unne unte unut upen upne upnp uppe uppp uppu upup ure- uret urne urre urte urun urup urur urut utep uter utne uttu uuen uuuu