-tree eeeee ef-tu efere efetf effer effet efter efuru efutu erere errtu erte erter etete etree etter eturu eurre feere feret ferr- ferre ferte feter fette feuer feute freer freet frere frett freur frute ftrtt fu-fu futur q-tee queef queer queet queff quere quert quete queue qureq quruq quurt reefe reeft reere refer refet reffe refut reque rere- reree reret retee reter rette reuer reuet reute ruere ruete ruffe ruter rutte ruutu tefe teret tereu terre tert- teter tetr- tette treer treet trefe treff trere trete trett treut truer truff trute ttttt tuffe tufte tuqtu tuque turet turre turtu turuq turut tutee tutte tuuru ufere urter urutu uter- utter uttur uturu uuuuu