-tree c-p-c c-tec ccccc ccell ccett ccnet ccrcl ccrel cctrl ceele ceene ceere celer cell- celle celte cence cenel cenpl cenpn cenpt cent- centr cepet cerc- cerce cerec ceren cerer ceret cerne cerre certe ceten cette cleen cleer cleet clene clent clepe clept clerc clere clete clett cnnnn cntln cntnl cntrc cntrl cpctc crece creel creen creep creer crele crell cren- crepe crept crete crnce crnec crner crrel cteep cten- ctene ctree ctrlc cttee e-ten eccen eccle eeeee eeler eence eener eenet eepee eeten elect eleet elele elene ellel ellen eller ellet elnec elpee elper elrec elren elten encre enent enete enlen ennet enper entel enten enter entre epeen epene eperc erect ereen erept erere erlen ernen ernet ernle erpel erte ertel erter etern etete etnre etree ettel etten etter ettle lcecn lecce leece leell leere leert lelep lelle lence lenne lente lepel leper lepet leppe lepre lept- leren lerer lerne leten letre lette n-p-n ncell ncree necr- nect- neece neele neere nelle nente neper neple neppe nepte neree neret nerre nerte neten netle netne netpc nette nlnet ntete ntlet p-n-p p-rep pcell pcept pcert pctct pecel peece peele peell peene peent peere peerl peert peete pelee peler pelet pelle pence pene- pener penne penre pent- pente pepee pepel peple peppe pept- perce perec perel peren perer peret perle perne pernt perre perte peter petr- petre pette pleen pleep pleet plene plete pllnt pnetc pptnt prece preen prell prelp prene prent prepl prepn prete prntr pter- ptere ptprc ptpre ptprn ptprr ptprt recce recen recep recet recpt rect- recte reece reene reepe reere relee relet relte rence renee rener renet renne rente repec repel repen repet reple reppe reprt rere- reree reret retee retel reter retnr rette rnpep rtenn tcell tecn- teele teell teepe telce tele- telec telen telep teler tell- telle tencc tence tenel tenen tener tenet tenne tenpn tente tepee tepet terce teret terne terre tert- tetel teten teter tetle tetr- tette tlell tlett tllnn tntnt tpler treen treer treet trele trenc trene trent trepp trept trere trete trett ttnet ttttt