-tree c-tec ccccc ccett cduce ceded ceder cedr- cedre ceede ceere cefcu cerc- cerce cerec cered cerer ceret cerre certe cette cfu-e crece crede creed creer creft crete cretu creu- creue cruce crude cruet crufe cruft crure ctree cttee cudde cufeu cuffe cufre curce cured curer curet curre cutcu cutee cuter d-cru ddddd decet decur dedde dedee deder dedur dedut deece deede deefe deeff deere defce defed defer defet deffe derce derde dered derre derue deter detre dette detur deuce deure deut- drdre dredd drede dreed dreff dreft drere druce drude duded duder duduc duere duerr duete duett dufur dured duree durer duret durre durte durtu dutte e-dee ectfe edder eddre edere edred educe educt eeeee eefde eerde ef-tu efere efetf effed effer effet efter efuru efutu erdec erdre erdut erect erede erere erfde erred errtu erte erter eruct etete etree etter etude eturu eucre eurre fedde fedee feder feere ferce ferde fered feret ferr- ferre ferte feted feter fette feued feuer feute frede freed freer freet frere frett freud freur fruct frude frute ftrtt fu-fu fudde fuddu furde furud futur recce reced recet rect- recte recue recur recut redde reder redur reece reede reefe reeft reere refed refer refet reffe refut rerde rere- reree reret reted retee reter rette reuer reuet reute rucer ruder ruede ruere ruete ruffe rurde rurec ruter rutte ruutu tedef teder teerd tefe terce teret tereu terre tert- teter tetr- tette treed treer treet trefe treff trere trete trett treut truce trude trued truer truff trute ttttt tucet tuctu tuder tudre tudur tuffe tufte turet turre turtu turut tutee tutte tuuru u-cee udder udert ufere urdee urter uruce urucu urutu uter- utter uttur uturu uuuuu