-tree eeeee eeler eepee eleet elele eleut ellel eller ellet ellul elpee elper elulu eluru elute epure erept erere erpel errtu erte ertel erter erupt etete etree ettel etter ettle eturu euell euler eurel eurre leell leere leert lelep leleu lelle lepel leper lepet leppe lepre lept- lerer letre lette letup letur leupp lulle lulte lulul luper luppe lupul lurer lurue lurup lute- luter lutte p-rep peele peell peere peerl peert peete pelee peler pelet pelle pepee pepel peple peppe pept- pepup perel perer peret perle perre perte perur peter petr- petre petru pette petur peule peure pleep pleet plete pleut plupp plut- plute prell prelp prepl prete prute pter- ptere ptpre ptprr ptprt ptpru puett puler pull- pulle pullu pulut pupet puple puppe puree purel purer purle purre purte purul puter putre putt- putte puttu putup re-up reepe reere relee relet relte relue repel repet reple reppe reprt reput rere- reree reret retee retel reter rette reuel reuer reuet reule reute ruele ruell ruere ruete ruler rupee rupel ruper ruter rutle rutte rutul ruule ruutu teele teell teepe teeup tele- telep teler teleu tell- telle tepee tepet tepeu teppu teret tereu terre tert- tetel teter tetle tetr- tette tlell tlett tpler treer treet trele trepp trept trere trete trett treut truel truer trule trull trupt trute ttttt tuell tuelt tulet tulle tupee tuple turel turet turle turre turtu turul turup turut tutee tutel tutle tutte tuuru ullet ullur ulpur ultre ululu uluru upeet upper upput upter urelu urtel urter urtlu urupe urutu uter- utter uttur uturu uuuuu