cccc cccp cccv ccee ccgc ccoc ccpe ccpp ccpr ccrc ccre ccrg ccrp ccvo cec- cece ceco cecp ceec cege cego ceop ceor cepc cepe cepo cepp cepr cer- cerc cere cero cerp cevo cgcc cgcg cger cgro coce coco cocp coep cogo coop cope copg copo copp copr cor- corc core corg coro corp corr cove covo cpce cpep cper cpre cpvc crcc crce crcr cre- crec cree creg creo crep croc croe croo crop cror crpc cvcc cver cvrg cvrr eccc ecce ecco eco- ecog ecop ecpg ecpp ecrc ecrr ecrv eeee eeoc eerc eerg eero egcc egcg egcr egec egee eger egge eggo eggp ego- egor egov egpe egpo egre eore epcc epec epee eper epoc epor eppc eppo eppp epro eprp ercc erce ercp erec erer erev erg- ergg ergo eroc eroe eroo erpe errc erre erro erve ever evoe evoo evop evre gc-c gccc gcov gcpc gcrg gece geep geer gege gegg gego geo- geog gepe gere gero geve gevo gggg ggpo goce gocr goer gogo goog goop goor gopc gope gopo gore gorg goro gorp gorr gove gper gpgp gprp grcc grce grec gree greg grep grev groc grog groo grop gror grov grpc grrr grve gvvv o-eo occc oce ocee ocpp ocre ocro ocrr oec- oecc oeec oere oevp ogee oger ogge ogog ogre ogro oocr ooer oooo oore opec opep oper opo- opor oppo orce orco ore- orec oreg oreo orer orge orgo oro- oroe oror orpc orpe orro orve orvr ovee over ovo- ovoo ovpp ovre pccc pcce pcep pcer pcgg pcoe pcpp pcrc pcre pece peco pecr peec peep peer peev pegg pego peor pepe pepo per- perc pere perg pero perp perr perv pgcc pgce pger pgrc poce poco poer poge pogg pogo poop poor pop- popc pope popo popp porc pore porg poro porr povo ppcc pper pppo pppp pprc prcc prcp pre- prec pree preg prep prev pro- proc proe prog proo prop prov pvco rccc rcep rcgc rcpo rcrg rcvr recc rece recp recr reep reev rege rego regr reog reop repe repo repp repr rere rerg rero reve revo revp rocc roce roco roeg roer roev roge rogg rogo roog roop roor rope ropo rorc rore roro rove rovo rpoe rrrr rv-c rver vecc veep veer vege veor vepe vepr ver- vere vero veve vevo vgcc voce voer voge vooc voog voor vor- vore voro vpro vreo vroc vver vvog vvvv