-tree eeeee eepee epees eppes epsxe erept erere erest erets erres erses erste ersts erte erter ertes esere esp-r esper espre esser esses essex essse estee estep ester estes estet estre etest etete etext etree etres etter ettes exept exert exper exptr exter extre extts p-rep peeps peere peers peert peese peest peete peets pepee pepes peppe pepst pept- perer peres peret perps perre perse persp perst perte peses pesse peste pests peter petes petr- petre pette petts ppers prees preps prese press prest prete pssst pssts pter- ptere pters ptpre ptprr ptprs ptprt reepe reere reese reest repet reppe repps reprt repts rere- reree reres reret resee reses reset resse reste restr rests retee reter retes retex rette retts rexer rexes rrsps rtext seeps seere seers seese seest seete sepet sept- septs serer seres seret serpe serps serre serse serss sert- serte serts seser seses sesse seste setee seter setse sette setts sexer sexes sexps sexpt sexst sext- sexte sexts speer spees speet speex spere sperr spert spete spets spree spres spret sssss steep steer stees steet step- stepe stepp steps stept stere sterr sters stert stete stets stree strep stret strrs sttep t-rex teepe teers teese teest teets tepee tepes tepet teres teret terex terps terre terrs terse tert- tespe tesse teste tests teter tetes tetex tetr- tette texte texts tppts treer trees treet trepp trept trere tres- trese tress trest trete trets trett trexs tsere tsets ttest ttttt xeres xerse xerte xetex xexex xtext xtree