-tree ddddd dedde dedee deder deede deepe deepp deere depex derde dered derpt derre deter detre dette drdre dredd drede dreed dreep drepe drere dxdxd e-dee edder eddre edere edred eeeee eeped eepee eerde erdre erede erept erere erred erte erter etete etext etree etter exede exept exert exper exptr exred exter extre p-rep pedee peere peert peete pepee peppe pept- perde perer peret perre perte peter petr- petre pette prede prepd prete pter- ptere ptprd ptpre ptprr ptprt redde reder redex reede reepe reere repet reppe reprt reptd rerde rere- reree reret reted retee reter retex rette rexer rtext t-rex teder teepe teerd tepee tepet teret terex terre tert- teter tetex tetr- tette texed texrd texte treed treer treet trepp trept trere trete trett ttttt xedre xerte xetex xexex xtext xtree