-tree eeeee eepee epure erept erere errtu erte erter erupt etete etree etter eturu eurre p-rep peere peert peete pepee peppe pept- pepup perer peret perre perte perur peter petr- petre petru pette petur peure prete prute pter- ptere ptpre ptprr ptprt ptpru puett pupet puppe puree purer purre purte puter putre putt- putte puttu putup re-up reepe reere repet reppe reprt reput rere- reree reret retee reter rette reuer reuet reute ruere ruete rupee ruper ruter rutte ruutu teepe teeup tepee tepet tepeu teppu teret tereu terre tert- teter tetr- tette treer treet trepp trept trere trete trett treut truer trupt trute ttttt tupee turet turre turtu turup turut tutee tutte tuuru upeet upper upput upter urter urupe urutu uter- utter uttur uturu uuuuu