-tree c-tec ccccc ccctv ccell ccett ccrcl ccrel cctrl ceele ceere celer cell- celle celte cerc- cerce cerec cerer ceret cerre certe cette cleer cleet clerc clere clete clett cleve clevr clue- cluer clurr clute clutt cluve crece creel creer crele crell crete cretu creu- creue creul creve crrel cruce cruel cruet crule crull crure cruve ctree ctrlc cttee ctulu culet culle cullu culur curce curel curer curet curle curll curlu curre curve cutcu cutee cuter cutle cuuel cuvee cvrce eccle eeeee eeler eevee eever elect eleet elele eleut eleve ellel eller ellet ellul elrec elulu eluru elute elver elvet erect erere ereve errtu erte ertel erter eruct etete etree ettel etter ettle eturu eucre euell euler eurel eurre evell evere everr evert evete evett eveve lecce leece leell leere leert leeve leleu lelle lerer letre lette letur leuc- leuce levec levee level lever levet levre lucee lucet lucre lucur lueve lulec lulle lulte luluc lulul lurer lurue lurve lute- luter lutte luver recce recet rect- recte recue recur recut reece reere reeve relee relet relte relue rere- reree reret retee retel reter rette reuel reuer reuet reule reute revel rever revet revle revue rtrev rucer rucul ruele ruell ruere ruete ruler rurec ruter rutle rutte rutul ruule ruutu tcell tecul teele teell telce tele- telec teler teleu tell- telle telve terce teret tereu terre tert- terve tetel teter tetle tetr- tette tevel tevet tlell tlett treer treet trele trere trete trett treut treve truce truel truer trule trull trute trutv ttttt tucet tuctu tuell tuelt tulce tulet tulle turel turet turle turre turtu turul turut turve tutee tutel tutle tutte tuuru tvtel tvvcr u-cee uccel uccle ucell uclue ulcer ullet ullur ultre ululu uluru ulver urcel urelu urtel urter urtlu uruce urucu urutu uter- utter uttur uturu uuuuu uvele uvule vecer veele veell veere veeve velct velet velev velle velur verel verre verte vertu verul verve vetel vetle vette veuve vevce vever vreel vuele vuere vulv- vulve vuver