-er eee eef eep eer eet ef- efe eff efi efp efr eft eie eif eii eip eir eit ep- epe epf epi epp epr ept ere erf eri erp err ert ete etf eti etp etr ett fee fef fei fep fer fet ffe fff ffi ffp ffr fft fie fif fii fip fir fit fpe fpi fpp fpr fpt fre frf fri frp frr frt fte ftf fti ftp ftr ftt i-f ie- iee ief iei iep ier iet ife iff ifi ifp ifr ift iie iif iii iip iir iit ipe ipf ipi ipp ipr ipt ir- ire irf iri irp irr irt ite itf iti itp itt p-p pee pef pei pep per pet pfe pff pfi pfp pfr pft pie pif pii pip pir pit ppe ppf ppi ppp ppr ppt pre prf pri prp prr prt pt- pte ptf pti ptp ptr ptt re- ree ref rei rep rer ret rfe rff rfi rfp rfr rft rie rif rii rip rir rit rpe rpf rpi rpp rpr rpt rrf rri rrp rrr rrt rte rtf rti rtp rtr rtt te- tee tef tei tep ter tet tfe tff tfi tfp tfr tft tie tif tii tip tir tit tpe tpf tpi tpp tpr tpt tre trf tri trp trr trt tte ttf tti ttp ttr ttt

eeee eefe eete efet effi efit eft- eftp eiei eier eipr eire eiti eitr epee eper epi- epie epip epit eppp eprp epte erei erer eret erft erie erit erpe erre etee eter etfe etre ette etti feer feet fefe feff fefi feie feir feit fere ferr fert fete feti fetp fetr fett ffee ffff ffii ffrr fftf fief fier fife fiff fifi fift fiii fipp fire fite fiti fitt fprf free frei frep fret frie frip frit fter ftii ftpe ieet ieie iere ieri ietf iett ifer ifit ifrf ifri iiie iiii iiit iipf iitr iitt iper ipet ipie ippf ippr ipri iree irer irfe iri- irie irip irpe irre irri irte irtf irti irtp itep iter itet itie itif itrf itri ittf peep peer peet peff peip peir peit pepe pepi per- pere perf peri perp perr pert pete peti petr pett pfet pfff pffr pfft pfit pfte piep pier piet piff piip pipe pipi pipp pire piri pirr pite pitf piti pitr pitt pper ppie ppif pppp pprf pptt pre- pree pref prep pret pri- prie prif prii prri prti prtp prtr pter ptrf reef reep reet refe reff refi refr reft reif reii reir reit repe repi repp repr rept rere reri rert rete reti retr rett rfef rief riep rier riet rife riff rift riif ripe ripi ripp ripr ript rire riri rite riti ritt rpet rpii rrif rrrr rtee rtei rttp teef teer teet teff tefi teft teie teip teir tepe tepi tepp ter- tere terf teri terp terr tete teti tetr tett tfpt tftp tie- tiee tief tiei tiep tier tiet tiff tift tiit tip- tipe tipi tipp tipt tire tiri tirr tite titi titp titt tper tpir tppp tppr tpte tptp tptr tre- tree tref trei tret trfr tri- trie trif trip trit trpe trpp trte trtr tter ttff tttt

-tree e-fit eeeee eepee eerie eetti efere eferi efetf effer effet effie efrei efter eipri eirie eiter eitri eppie eptfe erept erere erier eriff erite erte erter etete etite etree etter ettie feere feier feret ferie ferit ferr- ferre ferri ferte feter feti- fetii fetir fette fieee fieri fifer fifie firee firei firer firie firit firre fitit fitri fitte freei freep freer freet freir freit frere frett frier fripp frite fritt ftrtt ieiri iepe ieper ierei iette if-- ifere iffet ifrit ifttt iiiee iiiii iitti iperf ipeti ipiti ippee ippei irete irite irrep irrit itete itfet itfit itire itrip itter ittre ittti p-rep peere peeri peert peete peire peirt pepee peppe peppi pept- perer peret peri- perie perit perre perri perte perti peter petie petit petr- petre petri pette petti piere pieri piert piiri piper pipet pipit pippi pipri pirie pirre pirri piter pitie pitip pitre pitri pitti preef preff preie preif prete preti prief prier prife priit prite priti pritt pter- ptere pteri ptpre ptprf ptprr ptprt reefe reeft reepe reere reeti refer refet reffe refit reiff repet repit reppe reprt rere- reree reret rerip rerir retee reter retie retip rette ri-fi riefe rieti rifer riife riper ripit rippe ririe rperf rripe teepe tefe teffi tepee tepet tepit teret terif terre terri tert- teter tetr- tetri tette ti-ti tieit tiere tieri tierp tiffe tiifp tiper tipet tipit tippi tiree tirer tiret tirit titer titii titre titte titti treer treet trefe treff treie treif treip treit trepp trept trere treri trete trett triei trier triet trife triip tripe tripi tripp tript trit- trite tritt ttttt

eerier effeir effere effete efreet efter- eifert er-rif errett feerie feifer feirie ferfer ferier ferrer ferret ferri- ferrie fertee ferter fetter fiefie fierte fiftie firret fitter fittie fittit freepr frefre freire frette fterer fterie fterre i-free i-tree iffier ifreet ipeter ipfire irrite ittiri peepee peeper peerer peerie peeter peetre peetri peffer peiere peiper pepper perere perier perire perite perper perpet perree perret perrie perter pertie pertre peteet peteri petiet petite petitf petree petrer petri- petrie petter pettet petti- pettit pieper pierie pierre pierri pieter pietri piette piffer piperi pipier pipipi pipiri pipper pippet pippip piree pirrie pirrip pitier pitpit pitter pittie pppppp preeti prefer prefet preffe preier preiff preire preter pretre prette priefe priere priffe prifti pterri r-tree reefer reeffe reeper refeet refeff refert refete refire refrei refret refter reiter repete repier repipe repper repref reprie reteer reteet retere retief retire retree retret retrip retter rieter riette rietti riffer rififi rifter ripert ripier ripper rippet rippit rititi ritter t-tree teepee teetee teeter teirei teppei tepper terepi terete terper terrer terret terrie terrif territ terter tertre tetete tetter tiefer tierer tieret tiete tietie tiff-f tip-it tipiti tippee tipper tippet tippit tirret tirrit titfer titiri tittee titter tittie treete trefet trefte treife treppe tretee tretie trette trifet