-er c-- ccc cce ccf cco ccp ccr cct ce- cec cee cef ceo cep cer cet cfc cfe cff cfo cfp cfr cft co- coc coe cof coo cop cor cot cpc cpe cpf cpo cpp cpr cpt crc cre crf cro crp crr crt ctc cte ctf cto ctp ctr ctt ec- ecc ece ecf eco ecr ect eec eee eef eeo eep eer eet ef- efc efe eff efo efp efr eft eo- eoc eoe eof eoo eop eor eot ep- epc epe epf epo epp epr ept erc ere erf ero erp err ert etc ete etf eto etp etr ett fcc fce fcf fco fcp fcr fct fec fee fef feo fep fer fet ffc ffe fff ffo ffp ffr fft foc foe fof foo fop for fot fpc fpe fpo fpp fpr fpt frc fre frf fro frp frr frt ftc fte ftf fto ftp ftr ftt oc- occ ocf oco ocp ocr oct oec oee oef oeo oep oer oet of- ofc ofe off ofo ofp ofr oft oo- ooc oof ooo oop oor oot op- opc ope opf opo opp opr opt or- orc ore orf oro orp orr ort ot- otc ote otf oto otp otr ott p-p pcc pce pcf pco pcp pcr pct pec pee pef peo pep per pet pfc pfe pff pfo pfp pfr pft poc poe pof poo pop por pot ppc ppe ppf ppo ppp ppr ppt prc pre prf pro prp prr prt pt- ptc pte ptf pto ptp ptr ptt rcc rce rcf rco rcp rcr rct re- rec ree ref reo rep rer ret rfc rfe rff rfo rfp rfr rft roc roe rof roo rop ror rot rpc rpe rpf rpo rpp rpr rpt rrc rrf rrp rrr rrt rtc rte rtf rto rtp rtr rtt tcc tce tcf tco tcp tcr tct te- tec tee tef teo tep ter tet tfc tfe tff tfo tfp tfr tft to- toc toe tof too top tor tot tpc tpe tpf tpo tpp tpr tpt trc tre trf tro trp trr trt ttc tte ttf tto ttp ttr ttt

cccc cccf cccp ccee ccfc ccff ccoc ccpe ccpp ccpr ccrc ccre ccrf ccrp ccrt cctc cctt cec- cece ceco cecp cect ceec cef- cefc ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cerf cero cerp cert cet- cete ceto cetp cfcf cfco cffr cfor cfpo cfpr cfre cfrp cfrt cftc cfte cftr coce coco cocp coct coep cofc cofe coff coft coof coop coot cope copo copp copr copt cor- corc core corf coro corp corr cort cotc cote coto cott cpce cpep cper cpff cpft cpre cprt cptp cptr crcc crce crcr cre- crec cree creo crep cret crfc croc croe croo crop cror crot crpc crrt crtc crtf crtp ctcf ctcp ctec ctep ctfc ctfo ctor ctot ctpo ctpp ctrc ctrp eccc ecce ecco ecct ecef ecfc ecfr eco- ecop ecot ecpp ecrc ecrf ecrr ect- ectc ectf ecto eeee eefe eeoc eerc eero eetc eete efco efeo efet efor eft- eftp eore eotc eoto epcc epec epee eper epfc epoc epor epot eppc eppo eppp epro eprp epte ercc erce ercp erec erer eret erfc erft eroc eroe eroo erpe errc erre erro etcc etco etec etee eter etfc etfe etoe etre etro ette etto fccf fccp fcot fcto fece fect feer feet fefc fefe feff fefo feof fepc ferc fere fero ferr fert fete fetp fetr fett ffcc ffee ffff ffrr fftf foce foco foer fofo foof foot fopp for- fore foro forr fort fote foto fotp fott fp-c fpcc fpct fprf frcc frcp free freo frep fret frfc froe frop frot ft-c fter ftfc ftop ftpe o-eo occc occt oce ocee ocef ocet ocfp ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oere ofcr ofer off- offc offe offo offr ofor ofre oftp oocr ooer ooff oooo oore oort ootp opec opep oper opet opo- opor oppo opto orce orco ore- orec oreo orer orfe orff oro- oroe orof oror orot orpc orpe orro ortc orte orto otee otep oter otfc otfp oto- otoe otof otoo otor otpp otre otro otte otto pccc pcce pcep pcer pcfc pcoe pcpp pcrc pcre pcrf pcte pece peco pecr pect peec peep peer peet pefc peff peor pepe pepo per- perc pere perf pero perp perr pert pete peto petr pett pfce pfet pfff pffr pfft pfte poce poco poer poet poff poof poop poor poot pop- popc pope popo popp popt porc pore poro porr port potc pote potf poto pott ppcc pper pppo pppp pprc pprf pptt prcc prcf prcp pre- prec pree pref prep pret prfc pro- proc proe prof proo prop prot prtc prtp prtr ptcc pter ptop ptrf pttc rccc rcep rcet rcfc rcpo rcpt rctc recc rece recp recr rect reef reep reet refe reff refr reft reof reop reot repe repo repp repr rept rere rero rert rete reto retr rett rfef rffc rftc rocc roce roco roer roet rofc rofe roff rofo roof roop roor root rope ropo rorc rore roro rort rotc rote roto rotr rott rpet rpfc rpoe rpof rrfc rrrr rtcc rtce rtee rtfc rttp tccc tcep tcfc tcpo tctc teco tecr tect teec teef teer teet tefc teff teft teor tepe tepp ter- terc tere terf tero terp terr tete teto tetr tett tfec tfot tfpt tftc tftp toce toco toee toer toet toff tofo toft toof toor toot top- tope topf topo topp topt torc tore torf toro torp torr tort totc tote toto totr tott tpcp tper tppp tppr tpte tptp tptr trcc tre- trec tree tref treo tret trfc trfr troc troe troo trop trot trpc trpe trpp trtc trte trtr ttcp tteo tter ttfc ttff ttoe ttop tttt

-tree c-cor c-p-c c-pop c-tec ccccc ccett ceco- ceere cefor ceoce ceoor cepet cepot ceppo cerc- cerce cerco cerec cerer ceret cero- ceroc cerre cerro certe ceto- cette co-co co-op cocc- cocce