-tree e-ten eeeee eener eenet eeten ef-tu efere efetf effer effet efnet efren eften efter efuru efutu enent enete enfer enfeu ennet enrut enten enter entre enuff enure enurn ereen erere ernen ernet errtu erte erter ertun etern etete etnre etree etrun etten etter eturu eunet eurre feere fener feneu fenne feren feret ferr- ferre ferte feter fette feuer feute freer freet frere frett freur frunt frute ftrtt fu-fu funen funet furen futur neere neetu nefen nefer neffe nefre nefte nente neree neret nerre nerte nerur neten netne nette neuen neuer neueu neuft neune neur- neure ntete nu-nu nunet nunun nure- nurun nutte reefe reeft reene reere refen refer refet reffe refne refut renee rener renet renfe renne rente rere- reree reret rerun retee reter retnr rette reuen reuer reuet reune reute rtenn ruere ruete rueun ruffe runer runet runne runte ruten ruter rutte ruutu t-nut tefe tefen tenen tener tenet teneu tenne tennu tente tenue tenur teret tereu terne terre tert- teten teter tetr- tette tntnt treen treer treet trefe treff trene trent trere trete trett treut truer truff trute ttnet ttttt tuene tuffe tufte tune- tuner tunne turen turet turn- turne turnt turnu turre turtu turut tutee tutte tutun tuuru ufere unete unfun unfur unnet unnun unnur unnut unref unrun unten unter unurn urent urter urutu utenn uter- utter uttur uturn uturu uunet uuuuu