-er c-- ccc cce cco ccp ccr cct ccv ce- cec cee ceo cep cer cet cev co- coc coe coo cop cor cot cov cpc cpe cpo cpp cpr cpt cpv crc cre cro crp crr crt crv ctc cte cto ctp ctr ctt ctv cvc cve cvo cvp cvr cvt cvv ec- ecc ece eco ecr ect ecv eec eee eeo eep eer eet eev eo- eoc eoe eoo eop eor eot ep- epc epe epo epp epr ept erc ere ero erp err ert erv etc ete eto etp etr ett etv evc eve evo evp evr evt evv oc- occ oco ocp ocr oct ocv oec oee oeo oep oer oet oo- ooc ooo oop oor oot oov op- opc ope opo opp opr opt opv or- orc ore oro orp orr ort orv ot- otc ote oto otp otr ott otv ov- ovc ove ovo ovp ovv p-p pcc pce pco pcp pcr pct pcv pec pee peo pep per pet pev poc poe poo pop por pot pov ppc ppe ppo ppp ppr ppt ppv prc pre pro prp prr prt prv pt- ptc pte pto ptp ptr ptt ptv pvc pve pvo pvp pvr pvt pvv rcc rce rco rcp rcr rct rcv re- rec ree reo rep rer ret rev roc roe roo rop ror rot rov rpc rpe rpo rpp rpr rpt rpv rrc rrp rrr rrt rtc rte rto rtp rtr rtt rtv rvc rve rvo rvp rvr rvt rvv tcc tce tco tcp tcr tct tcv te- tec tee teo tep ter tet tev to- toc toe too top tor tot tov tpc tpe tpo tpp tpr tpt tpv trc tre tro trp trr trt trv ttc tte tto ttp ttr ttt ttv tvc tve tvo tvp tvr tvt v-e vcc vce vco vcp vcr vct vec vee veo vep ver vet voc voe voo vop vor vot vov vpc vpe vpo vpp vpr vpt vrc vre vrp vrr vrt vtc vte vto vtr vtt vtv vvc vvo vvr vvt vvv

cccc cccp cccv ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp ccrt cctc cctt cctv ccvo cec- cece ceco cecp cect ceec ceop ceor cepc cepe cepo cepp cepr cept cer- cerc cere cero cerp cert cet- cete ceto cetp cetv cevo coce coco cocp coct coep coop coot cope copo copp copr copt cor- corc core coro corp corr cort cotc cote coto cott cove covo cpce cpep cper cpre cprt cptp cptr cpvc cpvt crcc crce crcr cre- crec cree creo crep cret croc croe croo crop cror crot crpc crrt crtc crtp crtv ctcp ctec ctep ctor ctot ctpo ctpp ctrc ctrp ctvo ctvt cvcc cver cvet cvrr cvte eccc ecce ecco ecct eco- ecop ecot ecpp ecrc ecrr ecrv ect- ectc ecto ectv eeee eeoc eerc eero eetc eete eore eotc eoto epcc epec epee eper epoc epor epot eppc eppo eppp epro eprp epte eptv ercc erce ercp erec erer eret erev eroc eroe eroo erpe errc erre erro erve etcc etco etec etee eter etoe etre etro ette etto etvo ever evet evoe evoo evop evre o-eo occc occt oce ocee ocet ocpp ocre ocro ocrr oct- octe octo oec- oecc oeec oere oevp 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 orve orvr otee otep oter oto- otoe otoo otor otov otpp otre otro otte otto ovee over ovet ovo- ovoo ovot ovpp ovre pccc pcce pcep pcer pcoe pcpp pcrc pcre pcte pctv pece peco pecr pect peec peep peer peet peev peor pepe pepo per- perc pere pero perp perr pert perv 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 povo ppcc pper pppo pppp pprc pptt pptv prcc prcp pre- prec pree prep pret prev pro- proc proe proo prop prot prov prtc prtp prtr ptcc pter ptop pttc pvco rccc rcep rcet rcpo rcpt rctc rctv rcvr recc rece recp recr rect reep reet reev reop reot repe repo repp repr rept rere rero rert rete reto retr rett reve revo revp rocc roce roco roer roet roev roop roor root rope ropo rorc rore roro rort rotc rote roto rotr rott rove rovo rpet rpoe rrrr rtcc rtce rtee rttp rtve rv-c rver tccc tcep tcov tcpo tctc teco tecr tect teec teer teet teev 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 topv torc tore toro torp torr tort torv totc tote toto totr tott tove tovo tpcp tper tppp tppr tpte tptp tptr trcc tre- trec tree treo tret trev troc troe troo trop trot trpc trpe trpp trpv trtc trte trtr ttcp tteo tter ttoe ttop tttt tver tvro tvrr tvtv vecc veep veer veet veor vepe vepr ver- vere vero vert vete veto vetr veve vevo voce voer voet vooc voor voot vopt vor- vore voro vort vote voto votp vpro vreo vret vroc vrot vrto vtec vtpr vver vvvv

-tree c-cor c-evo c-p-c c-pop c-tec ccccc ccctv ccett ceco- ceere ceoce ceoor cepet cepot ceppo cerc- cerce cerco cerec cerer ceret cero- ceroc cerre cerro certe cervo ceto- cette co-co co-op cocc- cocce cocco coceo cocto coepe coete coeve 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 cortv corve corvo coter cott- cotte cotto coveo cover covet cpctc crece creep creer creo- creop creot crepe crept crete creve croce croco crooe croop croot cropc crope cropo crore crote crott crove cteep ctree cttee cvrce e-pro ecorp ecorv ecto- ector ectot eeeee eepee eevee eever eorre epcot eperc epopt epote erect erept erere ereve eroor erore