-er c-- ccc cce cco ccp ccr cct ce- cec cee ceo cep cer cet co- coc coe coo cop cor cot cpc cpe cpo cpp cpr cpt crc cre cro crp crr crt ctc cte cto ctp ctr ctt ec- ecc ece eco ecr ect eec eee eeo eep eer eet eo- eoc eoe eoo eop eor eot ep- epc epe epo epp epr ept erc ere ero erp err ert etc ete eto etp etr ett oc- occ oco ocp ocr oct oec oee oeo oep oer oet oo- ooc ooo oop oor oot op- opc ope opo opp opr opt or- orc ore oro orp orr ort ot- otc ote oto otp otr ott p-p pcc pce pco pcp pcr pct pec pee peo pep per pet poc poe poo pop por pot ppc ppe ppo ppp ppr ppt prc pre pro prp prr prt pt- ptc pte pto ptp ptr ptt rcc rce rco rcp rcr rct re- rec ree reo rep rer ret roc roe roo rop ror rot rpc rpe rpo rpp rpr rpt rrc rrp rrr rrt rtc rte rto rtp rtr rtt tcc tce tco tcp tcr tct te- tec tee teo tep ter tet to- toc toe too top tor tot tpc tpe tpo tpp tpr tpt trc tre tro trp trr trt ttc tte tto ttp ttr ttt

cccc cccp ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccrt cctc cctt cec- cece ceco cecp cect ceec ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp coce coco cocp coct coep coop coot cope copo copp copr copt cor- corc core coro corp corr cort cotc cote coto cott cpce cpep cper cpre cprt cptp cptr crcc crce crcr cre- crec cree creo crep cret croc croe croo crop cror crot crpc crrt crtc crtp ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp eccc ecce ecco ecct eco- ecop ecot ecpp ecrc ecrr ect- ectc ecto eeee eeoc eerc eero eetc eete eore eotc eoto epcc epec epee eper epoc epor epot eppc eppo eppp epro eprp epte ercc erce ercp erec erer eret eroc eroe eroo erpe errc erre erro etcc etco etec etee eter etoe etre etro ette etto o-eo occc occt oce ocee ocet ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oere oocr ooer oooo oore oort ootp opec opep oper opet opo- opor oppo opto orce orco ore- orec oreo orer oro- oroe oror orot orpc orpe orro ortc orte orto otee otep oter oto- otoe otoo otor otpp otre otro otte otto pccc pcce pcep pcer pcoe pcpp pcrc pcre pcte pece peco pecr pect peec peep peer peet peor pepe pepo per- perc pere pero perp perr pert pete peto petr pett poce poco poer poet poop poor poot pop- popc pope popo popp popt porc pore poro porr port potc pote poto pott ppcc pper pppo pppp pprc pptt prcc prcp pre- prec pree prep pret pro- proc proe proo prop prot prtc prtp prtr ptcc pter ptop pttc rccc rcep rcet rcpo rcpt rctc recc rece recp recr rect reep reet reop reot repe repo repp repr rept rere rero rert rete reto retr rett rocc roce roco roer roet roop roor root rope ropo rorc rore roro rort rotc rote roto rotr rott rpet rpoe rrrr rtcc rtce rtee rttp tccc tcep tcpo tctc teco tecr tect teec teer teet teor tepe tepp ter- terc tere tero terp terr tete teto tetr tett toce toco toee toer toet toor toot top- tope topo topp topt torc tore toro torp torr tort totc tote toto totr tott tpcp tper tppp tppr tpte tptp tptr trcc tre- trec tree treo tret troc troe troo trop trot trpc trpe trpp trtc trte trtr ttcp tteo tter ttoe ttop tttt

-tree c-cor c-p-c c-pop c-tec ccccc ccett ceco- ceere ceoce ceoor cepet cepot ceppo cerc- cerce cerco cerec cerer ceret cero- ceroc cerre cerro certe ceto- cette co-co co-op cocc- cocce cocco coceo cocto coepe coete cooee cooer coope coopt coore coote copce copec coper coppe coppo copr- copre copro copte copto corce core- coree corer coro- corop corot corpe corre corte corto coter cott- cotte cotto cpctc crece creep creer creo- creop creot crepe crept crete croce croco crooe croop croot cropc crope cropo crore crote crott cteep ctree cttee e-pro ecorp ecto- ector ectot eeeee eepee eorre epcot eperc epopt epote erect erept erere eroor erore eroto error erte erter etete etoro etree etter ocoee ocote ocree octet octo- octor oeco- oeppo oo-er oocre ooooo opepe opere opper opter opto- optot optto orcet orcop oreco oreo- orere orero oroco oroer orret orter ortet ortoo otere otero otoce ototo otpor otter p-rep pcept pcert pctct pecco peece peere peert peete pepco pepee peppe pept- pepto perce perec perer peret perot perre perro perte perto petco peter petr- petre petro pette petto po-po pocop poete pooer poope poopo poore poort poote popco poper popet popop poppe poppo porco porec porer poret poro- porro porte porto potco potec potee poter potoc potoo potop potor potpe potro potte potto prece preco preop prete preto proer proor proot prop- prope propp propr propt prore prot- proto prtor pter- ptere ptero ptprc ptpre ptpro ptprr ptprt r-co- recce recco recep recet recpt rect- recte recto reece reepe reere repco repec repet repop repor repot reppe repro reprt rere- reree reret retee reter retop retro rette retto ro-ro rocco rocor roero rooer roope roore roote roper roppe rorer roter roto- rotor rotot rotte rotto rprop rptor t-pop t-top teepe teoco tepco tepee tepet tepor teppo terce terco teret teror terre terro tert- teter tetr- tetro tette tocco toco- toece toerr toeto toore topee toper topet topo- topor topot toppo topto torce toreo toret torpe torpo torre torro torte torto toter toto- totoe totoo totop totte tprot treco treer treet trepp trept trere trete trett troco troee troop