-tree c-p-c c-tec ccccc ccell ccett ccrcl ccrel cctrl ceele ceere celer cell- celle celte cepet cerc- cerce cerec cerer ceret cerre certe cette cleer cleet clepe clept clerc clere clete clett clue- cluer clupe clurr clute clutt cpctc crece creel creep creer crele crell crepe crept crepu crete cretu creu- creue creul creup crrel cruce cruel cruet crule crull crupe crure cteep ctree ctrlc cttee ctulu cueup culet culle cullu culpe culur cupel cuper cuple cupr- cupul curce curel curer curet curle curll curlu curre curup cutcu cutee cuter cutle cutup cuuel eccle eccup eeeee eeler eepee elect eleet elele eleut ellel eller ellet ellul elpee elper elrec elulu eluru elute eperc epure erect erept erere erpel errtu erte ertel erter eruct erupt etete etree ettel etter ettle eturu eucre euell euler eurel eurre lecce leece leell leere leert lelep leleu lelle lepel leper lepet leppe lepre lept- lerer letre lette letup letur leuc- leuce leupp lucee lucet lucre lucur lulec lulle lulte luluc lulul luper luppe lupul lurer lurue lurup lute- luter lutte p-rep pcell pcept pcert pctct pecel pecul peece peele peell peere peerl peert peete pelee peler pelet pelle pepee pepel peple peppe pept- pepup perce perec perel perer peret perle perre perte peruc perur petcu peter petr- petre petru pette petur peuce peule peure pleep pleet plete pleut plupp plut- plute prece prell prelp prepl prete pruce prute pter- ptere ptprc ptpre ptprr ptprt ptpru pucel puett pulce puler pull- pulle pullu pulut pupet puple puppe purce puree purel purer purle purre purte purul puter putre putt- putte puttu putup re-up recce recep recet recpt rect- recte recue recur recut reece reepe reere relee relet relte relue repec repel repet reple reppe reprt reput rere- reree reret retee retel reter rette reuel reuer reuet reule reute rucer rucul ruele ruell ruere ruete ruler rupee rupel ruper rurec ruter rutle rutte rutul ruule ruutu tcell tecul teele teell teepe teeup telce tele- telec telep teler teleu tell- telle tepee tepet tepeu teppu terce teret tereu terre tert- tetel teter tetle tetr- tette tlell tlett tpler treer treet trele trepp trept trere trete trett treut truce truel truer trule trull trupt trute ttttt tucep tucet tuctu tuell tuelt tulce tulet tulle tupee tuple turel turet turle turre turtu turul turup turut tutee tutel tutle tutte tuuru u-cee uccel uccle ucell uclue ulcer ullet ullur ulpur ultre ululu uluru upc-e upcut upeet upper upput upter urcel urelu urtel urter urtlu uruce urucu urupe urutu uter- utter uttur uturu uuuuu