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