-er eee eef eeo eep eer eet ef- efe eff efo efp efr eft eo- eoe eof eoo eop eor eot ep- epe epf epo epp epr ept ere erf ero erp err ert ete etf eto etp etr ett fee fef feo fep fer fet ffe fff ffo ffp ffr fft foe fof foo fop for fot fpe fpo fpp fpr fpt fre frf fro frp frr frt fte ftf fto ftp ftr ftt oee oef oeo oep oer oet of- ofe off ofo ofp ofr oft oo- oof ooo oop oor oot op- ope opf opo opp opr opt or- ore orf oro orp orr ort ot- ote otf oto otp otr ott p-p pee pef peo pep per pet pfe pff pfo pfp pfr pft poe pof poo pop por pot ppe ppf ppo ppp ppr ppt pre prf pro prp prr prt pt- pte ptf pto ptp ptr ptt re- ree ref reo rep rer ret rfe rff rfo rfp rfr rft roe rof roo rop ror rot rpe rpf rpo rpp rpr rpt rrf rrp rrr rrt rte rtf rto rtp rtr rtt te- tee tef teo tep ter tet tfe tff tfo tfp tfr tft to- toe tof too top tor tot tpe tpf tpo tpp tpr tpt tre trf tro trp trr trt tte ttf tto ttp ttr ttt

eeee eefe eero eete efeo efet efor eft- eftp eore eoto epee eper epor epot eppo eppp epro eprp epte erer eret erft eroe eroo erpe erre erro etee eter etfe etoe etre etro ette etto feer feet fefe feff fefo feof fere fero ferr fert fete fetp fetr fett ffee ffff ffrr fftf foer fofo foof foot fopp for- fore foro forr fort fote foto fotp fott fprf free freo frep fret froe frop frot fter ftop ftpe o-eo oere ofer off- offe offo offr ofor ofre oftp ooer ooff oooo oore oort ootp opep oper opet opo- opor oppo opto ore- oreo orer orfe orff oro- oroe orof oror orot orpe orro orte orto otee otep oter otfp oto- otoe otof otoo otor otpp otre otro otte otto peep peer peet peff peor pepe pepo per- pere perf pero perp perr pert pete peto petr pett pfet pfff pffr pfft pfte poer poet poff poof poop poor poot pop- pope popo popp popt pore poro porr port pote potf poto pott pper pppo pppp pprf pptt pre- pree pref prep pret pro- proe prof proo prop prot prtp prtr pter ptop ptrf reef reep reet refe reff refr reft reof reop reot repe repo repp repr rept rere rero rert rete reto retr rett rfef roer roet rofe roff rofo roof roop roor root rope ropo rore roro rort rote roto rotr rott rpet rpoe rpof rrrr rtee rttp teef teer teet teff teft teor tepe tepp ter- tere terf tero terp terr tete teto tetr tett tfot tfpt tftp toee toer toet toff tofo toft toof toor toot top- tope topf topo topp topt tore torf toro torp torr tort tote toto totr tott tper tppp tppr tpte tptp tptr tre- tree tref treo tret trfr troe troo trop trot trpe trpp trte trtr tteo tter ttff ttoe ttop tttt

-tree e-pro eeeee eepee efere efetf effer effet efore efter eofor eorre epopt epote eptfe erept erere eroor erore eroto error erte erter etete etoro etree etter feeor feere fefor feoff feret ferr- ferre ferro ferte feter feto- fetor fette foore foote fore- foreo foret forro forte forto fotte fprot freep freer freet frere frett froop froot frore frote ftrtt o-fer oeppo offer offof offre offto ofoto ofpop ofter oo-er ooooo opepe opere opper opter opto- optot optto oreo- orere orero orfeo orfoe orfor oroer orret orter ortet ortoo otere otero ototo otpor otter p-rep peere peert peete pepee peppe pept- pepto perer peret perot perre perro perte perto peter petr- petre petro pette petto pforp po-po poete pooer poope poopo poore poort poote poper popet popop poppe poppo porer poret poro- porro porte porto potee poter potof potoo potop potor potpe potro potte potto preef preff preop prete preto proer profe proff proft proof proor proot prop- prope propp propr propt prore prot- proto prtor pter- ptere ptero ptpre ptprf ptpro ptprr ptprt reefe reeft reepe reere refer refet reffe reffo repet repop repor repot reppe repro reprt rere- reree reret retee reter retop retro rette retto ro-ro roero roffe rofor rooer roofe rooft roope roore roote roper roppe rorer roter roto- rotor rotot rotte rotto rperf rprop rptor t-pop t-top teepe tefe tepee tepet tepor teppo teret teror terre terro tert- teter tetr- tetro tette toeof toerr toeto tofet toffo tofop tofor tofte toore topee toper topet topo- topof topor topot toppo topto toreo toret torpe torpo torre torro torte torto toter toto- totoe totoo totop totte tprot treer treet trefe treff trepp trept trere trete trett troee trofe troff troft troop trop- trope tropo trott ttttt

e-port effere effete effoff effore effort efreet efter- eototo epopee eroto- errett etoeot ettore f-prot feeror feetof feofor ferfer ferrer ferret ferro- fertee ferter fetter foerre foeto- foetor foofoo footer fopper foppet forpet forrer forrot fortee forter freeof freepr freeto frefre frette froofe fterer fterre ftroop oerter oferre offeet ofpoor oftfor oofotr oooooo oporto oppert optfor optoro ottoor ottope peepee peeper peerer peeter peetre peffer pepero pepper pepto- perere pereto peroff peroor perore perper perpet perree perret perrot perter pertre peteet petoro petree petrer petro- petrof petter pettet poetto poffer pooper poopet poopoo poorer pooter popfor popoff popopo poporo popote popper poppet poppop poptop porete porret porte- portee porter portet portof poteet potere potter pottop pppppp pre-op prefer prefet preffe preore preter pretor pretre prette pretto profer profet proffe profor profre proper propre prote- proter proto- ptero- r-tree reefer reeffe reeper refeet refeff refert refete refoot refret refter repete repope report repper repref reroof reroot reteer reteet reteoo retere retore retort retree retret retro- retrot retter roeper roofer roopee rooper rooter rootof