-tree c-met c-p-c c-tec ccccc ccett cecum ceere cemec cemre cepet cerc- cerce cerec cerer ceret cerre certe cetme cette cmere cpctc crece creem creep creer creme cremp crepe crept crepu crete cretu creu- creue creup cruce cruet crume crump crupe crure ctcum cteep ctree cttee cueup cumec cumm- cump- cuper cupr- curce curer curet curre curup cutcu cutee cuter cutup eccup ecume eeeee eemct eepee emcee emeer emere emert emmer emmet empee empte emtec emtee emure eperc epure erect erem- erept erere errtu erte erter eruct erump erupt etete etree etter eturu eucre eum-u eurre mccue mcree mcrpc mecum meece meemu meere meete memer merce merer meret merre merte merur meter metr- metre mette metup metur meuer meure meute mmccc mmmcc mmmmm mpret mreru mrmet mt-tc mt-te mt-tm mt-tp mt-tr mt-tt mtepe mtree mtume muctc mucum mucur mumcu mumme mummu muppu muret mureu murre murru murum murup murut muter mutet mutum p-rep pcept pcert pctct peece peere peert peete pepee peppe pept- pepup perce perec perer peret perre perte peruc perur petcu peter petr- petre petru pette petur peuce peure prece preem preme premp prete pruce prute pter- ptere ptprc ptpre ptprm ptprr ptprt ptpru puett pumpe pupet puppe purce puree purer purre purte purum puter putre putt- putte puttu putup re-up recce recep recet recpt rect- recte recue recur recut reece reeme reepe reere remee remer remet remue repec repet reppe reprt reput rere- reree reret rerum retee retem reter rette reuer reuet reume reute rmutt rucer ruere ruete rumer rummu rumpt rupee ruper rurec ruter rutte ruutu tcpmp tecum teeme teemu teepe teeup tempe tempt tepee tepet tepeu teppu terce terem teret tereu terme terre tert- teter tetr- tette treer treet treme tremp trepp trept trere trete trett treut truce truer trume trump trupt trute ttttt tucep tucet tuctu tucum tumut tupee turem turet turre turtu turup turut tutee tutte tuuru u-cee umeer umeme upc-e upcut upeet upmet upper upput upter ureme urter uruce urucu urupe urutu uter- utmer utrum utter uttur uturu uuuuu