-tree c-p-c c-tec ccccc ccett ccnet cecun ceene ceere cefcu cence ceneu cenpf cenpn cenpt cent- centr cepet cerc- cerce cerec ceren cerer ceret cerne cerre certe ceten cette cetun cfu-e cneru cnnfn cnnnn cntrc cpcfc cpctc crece creen creep creer creft cren- crepe crept crepu crete cretu creu- creue creup crnce crnec crner cruce cruet crufe cruft crune crunt crupe crure cteep cten- ctene ctree cttee cueup cufeu cuffe cufre cunne cunt- cunut cuper cupr- curce curer curet curre curup cutcu cutee cuter cutup e-ten eccen eccup ectfe eeeee eence eener eenet eepee eeten ef-tu efere efetf effer effet efnet efren eften efter efuru efutu encre encup encur enent enete enfce enfer enfeu ennet enper enpeu enrut enten enter entre enuff enure enurn epeen epene eperc eptfe epure erect ereen erept erere ernen ernet errtu erte erter ertun eruct erupt etern etete etnre etree etrun etten etter eturu eucen eucre eunet eupen eurre fcent feere fence fener feneu fenne ferce feren feret ferr- ferre ferte feter fette feuer feute frcpc freep freer freet frere frett freur fruct frunt frute ftrtt fu-fu fucun funen funet furen futur n-p-n ncftp ncree necr- nect- neece neere neetu nefen nefer neffe nefre nefte nente neper neppe nepte neree neret nerre nerte nerur neten netne netpc nette neuen neuer neueu neuft neune neur- neure nnfcc ntete nu-nu nucet nunce nunet nunun nupen nupur nurce nure- nurfc nurun nutec nutte p-n-p p-rep pcept pcert pctct peece peene peent peere peert peete pence pene- pener penne penre pent- pente pentu penup penur pepee peppe pept- pepup perce perec peren perer peret perne pernt perre perte peruc perun perur petcu peter petr- petre petru pette petun petur peuce peure pnetc pptnt prece preef preen preff prene prent prepn prete prntr pruce pruen prun- prune prunt prute pter- ptere ptprc ptpre ptprf ptprn ptprr ptprt ptpru puett punce punct punee punne punte pupet puppe purce puree puren purer purre purte puten puter putre putt- putte puttu putun putup re-up recce recen recep recet recpt rect- recte recue recur recut reece reefe reeft reene reepe reere refen refer refet reffe refne refut rence renee rener renet renfe renne rente repec repen repet reppe reprt repun reput rere- reree reret rerun retee reter retnr rette reuen reuer reuet reune reute rnpep rperf rtenn rucer ruere ruete rueun ruffe runcu runec runer runet runne runte runup rupee ruper rurec ruten ruter rutte ruutu t-nut tecn- tecnu teepe teeup tefe tefen tencc tence tenen tener tenet teneu tenne tennu tenpn tente tenue tenup tenur tepee tepet tepeu teppu tepun terce teret tereu terne terre tert- teten teter tetr- tette tnftp tntnt treen treer treet trefe treff trenc trene trent trepp trept trere trete trett treut truce truer truff trupt trute ttnet ttttt tucep tucet tuctu tuene tuffe tufte tune- tuner tunne tupee turen turet turn- turne turnp turnt turnu turre turtu turup turut tutee tutte tutun tuuru u-cee ufere uncup uncut unerp unete unfun unfur unnet unnun unnur unnut unpen unpeu unput unref unrep unrun unten unter unurn upc-e upcut upeet upenn uppen upper upput uprun upter urent urter uruce urucu urupe urutu utenn uter- utter uttur uturn uturu uunet uuuuu