-tree eeeee eepee eerie eetti eevee eever eipri eirie eiter eitri eppie erept erere ereve erier erite erte erter ervie etete etite etive etree etter ettie evere everi everr evert evete evett eveve evite ieiri iepe ieper ierei iette iever iiiee iiiii iitti ipeti ipiti ippee ippei irete irite irrep irrit itete itire itive itrip itter ittre ittti ivett ivver p-rep peere peeri peert peete peeve peire peirt pepee peppe peppi pept- perer peret peri- perie perit perre perri perte perti perve peter petie petit petr- petre petri pette petti piere pieri piert pieve piiri piper pipet pipit pippi pipri pirie pirre pirri piter pitie pitip pitre pitri pitti pitve pivie pivit preie prete preti pretv preve prier priit prite priti pritt pritv prive pter- ptere pteri ptpre ptprr ptprt reepe reere reeti reeve reive repet repit reppe reprt rere- reree reret rerip rerir retee reter retie retip rette revep rever revet revie revir rieti rieve riper ripit rippe ririe river rivet rripe rtrev rvivr teepe tepee tepet tepit teret terre terri tert- terve teter tetr- tetri tette tevet tevir ti-ti tieit tiere tieri tierp tiper tipet tipit tippi tiree tirer tiret tirit tirve titer titii titre titte titti tiver treer treet treie treip treit trepp trept trere treri trete trett treve trevi triei trier triet triip tripe tripi tripp tript trit- trite tritt trive ttttt tveit veere veeri veeve veire veive veper verie verre verri verte verti verve vetri vette vetti vever vieri vietv viiri viper virei viret virii virre virte virve vitet viti- vitr- vitre vitte vitti viver vivi- vivir vivre vreit vvt-i