-tree eeeee eeler eepee eerie eetti eiler eilet eipri eirie eitel eiter eitri eleet elele eleri eliel elite ellel eller ellet ellie elpee elper eppie erept erere erewe erier erite erpel errew erte ertel erter ertil etete etile etite etree ettel etter ettie ettle etwee ewell ewert ieiri iepe ieper ierei iette iiiee iiiii iitti ileri iller illit ilter ipel ipele ipeti ipiti ippee ippei irele irete irewe iriel irill irite irrel irrep irrit itele itell itete itewe itire itrip ittel itter ittre ittti iweep iwere iwill iwrit leeli leell leere leert leile leill leip- leire leite lelei lelep lelle lelli lepel leper lepet lepew lepir leppe lepre lept- lerer lerie letil letit letre lette lewer lewit lewre lewte lieli liepe liere lilet lilie liliw lille lilli lipet lipie lippe lippi liril litel liter litir litre litte litti lwiii p-rep peele peell peere peeri peerl peert peete peile peill peire peirl peirt pelee peler pelet pelew pelit pelle pelli pepee pepel peple peppe peppi pept- perel perer peret peri- perie peril perit perle perre perri perte perti peter petie petit petr- petre petri pette petti pewee pewet pewit pewpe pewre piele piere pieri piert piewe piiri pilei piler pilet pilew pili- pille pilwe piper pipet pipil pipit piple pipli pippi pipri pirie pirre pirri piter pitie pitip pitle pitre pitri pitti pleep pleet pleie pleit plete pliei plier plite plitt preie prell prelp prepl prete preti prewe prier priit prile prill prite priti pritt priwe pter- ptere pteri ptil- ptile ptpre ptprr ptprt reepe reere reeti reewe reile reill relee relet relie relit relli relte repel repet repew repit reple reppe reprt reprw rere- reree reret rerip rerir retee retel reter retew retie retil retip rette rewel rewer rewet rewle rewli rewll rieti riler rille ripel riper ripit riple rippe ririe riwle rripe teele teell teepe teill tele- telei telep teler telit tell- telle telli telti telwe tepee tepet tepit teret terli terre terri tert- tetel teter tetle tetr- tetri tette tewel tewer tewet tewit ti-ti tieit tiele tieli tielt tiere tieri tierp tiler tilie tilip tille tilli tilte tilwe tiper tipet tipil tipit tiple tippi tiree tirer tiret tirit tirle tirli tirtl titel titer titii titil title titli titre titte titti tlell tlett tpler treer treet treie treil treip treit trele trepp trept trere treri trete trett trewe triei trier triet triip trill tripe tripi tripl tripp tript trit- trite tritt triwe ttttt tweel tweep tweer tweet tweie twell twelt twere twerp twier twile twill twilt twire twirl twirp twite weele weepe weere weert weete weier weile weill weipe weire weite welew welle welli welte welti weper wepit wepte were- werei werel werew werie werle werpe werre werte weter wette wi-wi wiele wilee wiler wilie wille willi wilwe wiper wipit wippe wipte wirer wirie wirwe witel witer witie witte witti wlite wlpwr wreil wrele wrete wrett wrier write ww-ii wwiii wwwww