-er -up eee eep eer eet eie eii eip eir eit eiu ep- epe epi epp epr ept epu ere eri erp err ert eru ete eti etp etr ett etu eu- eue eui eup eur eut ie- iee iei iep ier iet iie iii iip iir iit iiu ipe ipi ipp ipr ipt ipu ir- ire iri irp irr irt iru ite iti itp itt itu iu- iue iui iup iur iut p-p pee pei pep per pet peu pie pii pip pir pit piu ppe ppi ppp ppr ppt ppu pre pri prp prr prt pru pt- pte pti ptp ptr ptt ptu pue pui pup pur put puu re- ree rei rep rer ret reu rie rii rip rir rit rpe rpi rpp rpr rpt rpu rri rrp rrr rrt rru rte rti rtp rtr rtt rtu rue rui rup rur rut ruu te- tee tei tep ter tet teu tie tii tip tir tit tiu tpe tpi tpp tpr tpt tpu tre tri trp trr trt tru tte tti ttp ttr ttt ttu tue tui tup tur tut tuu uee uei uep uer uet uie uii uip uir uit uiu up- upe upi upp upr upt upu ur- ure uri urp urr urt uru ute uti utp utr utt utu uue uur uut uuu

eeee eete eetu eiei eier eipr eire eiti eitr epee eper epi- epie epip epit eppp eprp epte erei erer eret erie erit eriu erpe erre ertu erur etee eter etre ette etti ettu etui euer eur- eure eurt ieet ieie iere ieri iett iiie iiii iiit iitr iitt iper ipet ipie ippr ipri ipur iput iree irer iri- irie irip irpe irre irri irte irti irtp itep iter itet itie itri itup itur iuiu iupp peep peer peet peip peir peit pepe pepi per- pere peri perp perr pert peru pete peti petr pett peur peut piep pier piet piip pipe pipi pipp pire piri pirr piru pite piti pitr pitt pitu pper ppie pppp ppru pptt ppur pre- pree prep pret preu pri- prie prii prri prti prtp prtr prue prut pruu pter ptui pu-e puer puet pueu puir puit puiu pupe pupi pupu pur- pure puri purp purr puru put- pute puti putt putu reep reet reii reir reit reiu repe repi repp repr rept repu rere reri rert reru rete reti retr rett reue reup reut reuu riep rier riet rieu ripe ripi ripp ripr ript rire riri rite riti ritt ritu riue rpet rpii rrrr rtee rtei rttp ruer ruet ruit rupe rupp rupt rure ruri rurp ruru rute ruti rutt rutu teer teet teie teip teir teiu tepe tepi tepp tepu ter- tere teri terp terr teru tete teti tetr tett tetu teut tie- tiee tiei tiep tier tiet tiit tiiu tip- tipe tipi tipp tipt tipu tire tiri tirr tiru tite titi titp titt titu tper tpir tppp tppr tpte tptp tptr tput tre- tree trei tret treu tri- trie trip trit trpe trpp trte trtr true trut truu tter tttt tuei tuer tuet tuit tuiu tupe tupi tupu ture turi turp turr turt turu tute tuti tutt tutu u-ie u-rp ueir uepi uipi uirr upie uppe uppp uppu upri upup ure- uret urie uriu urre urri urte urup urur urut utep uter utri utti uttu uuri uuuu

-tree eeeee eepee eerie eetti eipri eirie eiter eitri eppie epure erept erere erier erite eritu errtu erte erter erupt etete etite etree etter ettie eturu eurre ieiri iepe ieper ierei iette iiiee iiiii iitti iperu ipeti ipiti ippee ippei irete irite irrep irrit irupi itete itire itrip itter ittre ittti itu-r itu-t ituri ituru itutu iuput iurie p-rep peere peeri peert peete peire peirt pepee peppe peppi pept- pepup perer peret peri- perie perit perre perri perte perti perur peter petie petit petr- petre petri petru pette petti petur peure piere pieri piert pieup piiri piper pipet pipit pippi pipri pirie pirre pirri pirui piter pitie pitip pitre pitri pitru pitti piuri piuru piute preie prete preti prier priit prite priti pritt prute pter- ptere pteri ptpre ptprr ptprt ptpru pueri puett pupet puppe pupri puree purer purie purre purte puter putit putre putt- putte putti puttu putup puuri re-up reepe reere reeti repet repit reppe reprt reput rere- reree reret rerip rerir retee reter retie retip rette reuer reuet reuir reute reuti rieti riper ripit rippe ripup ririe rirpu riuer rripe ruere ruete ruiru rupee ruper rupie rupit ruter rutte ruutu teepe teeup tepee tepet tepeu tepit teppu tepui teret tereu terre terri tert- teter tetr- tetri tette ti-ti tieit tiere tieri tierp tieup tieut tiper tipet tipit tippi tippu tipup tiree tirer tiret tirit tirru tirur titer titii titre titte titti titup treer treet treie treip treit trepp trept trere treri trete trett treut triei trier triet trieu triip tripe tripi tripp tript trit- trite tritt truer truit trupt trute ttttt tueie tueit tuire tuite tupee tuppi turei turet turie turit turre turri turtu turup turut tutee tutie tutte tutti tuuei tuuri tuuru uitti upeet upier upper uppie upput upter uptie ureit urite urter uruit urupe ururi uruti urutu uter- uteri utier utter uttur uturu uuuuu

eerier errett ettutu euerie euippe euripe euripi eurite eutere i-tree ipeter irrite irrupt ittiri iturup peepee peeper peerer peerie peeter peetre peetri peiere peiper pepper perere peretu perier perire perite perper perpet perree perret perrie perter pertie pertre peteet peteri peteru petiet petite petree petrer petri- petrie petter pettet petti- pettit pieper pierie pierre pierri pieter pietri piette piperi pipeup pipier pipipi pipiri pipper pippet pippip piree pirrie pirrip pitier pitpit pitter pittie pituri piupiu pppppp preeti preeue preier preire preter pretre prette preue- preui- priere prieue prieur pruett pruitt prurit pterri puerer puppet pupput purete puriri purpie purpit purpre purpur purree purrer put-up putput putrer puttee putter puttie puttur puture r-tree reeper reiter repete repier repipe repper reprie repuit repure repuru repute reteer reteet retere retire retree retret retrip retter rettur returu reueir reuere reuire reuter reutte