-tree eeeee eepee epees eppes erept erere erest erets erres erses erste ersts erte erter ertes esere esp-r esper espre esser esses essse estee estep ester estes estet estre etest etete etree etres etter ettes p-rep peeps peere peers peert peese peest peete peets pepee pepes peppe pepst pept- perer peres peret perps perre perse persp 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 rette retts rrsps 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 speer spees speet 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 teepe teers teese teest teets tepee tepes tepet teres teret terps terre terrs terse tert- tespe tesse teste tests teter tetes tetr- tette tppts treer trees treet trepp trept trere tres- trese tress trest trete trets trett tsere tsets ttest ttttt