-tree ddddd dedde dedee deder dedur dedut deede deefe deeff deepe deepp deepu deere defed defer defet deffe depue derde dered derpt derre derue deter detre dette detur deure deut- drdre dredd drede dreed dreep dreff dreft drepe drere drude drupe duded duder duere duerr duete duett dueup dufur duped duper dured duree durer duret durre durte durtu dutte e-dee edder eddre edere edred eeeee eefde eeped eepee eerde ef-tu efere efetf effed effer effet efter efuru efutu eptfe epure erdre erdut erede erept erere erfde erred errtu erte erter erupt etete etree etter etude eturu eurre fedde fedee feder fedup feere ferde fered feret ferr- ferre ferte feted feter fette feued feuer feute frede freed freep freer freet frere frett freud freur frude frute ftrtt fu-fu fudde fuddu furde furud futur p-rep pedee peedu peere peert peete pepee peppe pept- pepup perde perdu perer peret perre perte perur peter petr- petre petru pette petur peude peure prede preef preff prepd prete prude prute pter- ptere ptprd ptpre ptprf ptprr ptprt ptpru pudde puder pudur puett pupet puppe pured puree purer purre purte puter putre putt- putte puttu putup re-up redde reder redup redur reede reefe reeft reepe reere refed refer refet reffe refut repet reppe reprt reptd reput rerde rere- reree reret reted retee reter rette reuer reuet reute rperf ruder ruede ruere ruete ruffe rupee ruper rurde ruter rutte ruutu tedef teder teepe teerd teeup tefe tepee tepet tepeu teppu teret tereu terre tert- teter tetr- tette treed treer treet trefe treff trepp trept trere trete trett treut trude trued truer truff trupt trute ttttt tuder tudre tudur tuffe tufte tupee turet turre turtu turup turut tutee tutte tuuru udder udept udert ufere upedu upeet upped upper upput upter urdee urter urupe urutu uter- utter uttur uturu uuuuu