-tree c-tec ccccc ccctv ccett ceere cerc- cerce cerec cerer ceret cerre certe cette crece creer crete cretu creu- creue creve cruce cruet crure cruve ctree cttee curce curer curet curre curve cutcu cutee cuter cuvee cvrce eeeee eevee eever erect erere ereve errtu erte erter eruct etete etree etter eturu eucre eurre evere everr evert evete evett eveve recce recet rect- recte recue recur recut reece reere reeve rere- reree reret retee reter rette reuer reuet reute rever revet revue rtrev rucer ruere ruete rurec ruter rutte ruutu terce teret tereu terre tert- terve teter tetr- tette tevet treer treet trere trete trett treut treve truce truer trute trutv ttttt tucet tuctu turet turre turtu turut turve tutee tutte tuuru tvvcr u-cee urter uruce urucu urutu uter- utter uttur uturu uuuuu vecer veere veeve verre verte vertu verve vette veuve vevce vever vuere vuver