cccc cccp ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp cec- cece ceco cecp ceec ceop ceor cepc cepe cepo cepp cepr cer- cerc cere cero cerp cery coce coco cocp coep coop cope copo copp copr copy cor- corc core coro corp corr cory coyo coyr cpce cpep cper cpre crcc crce crcr cre- crec cree creo crep croc croe croo crop cror croy crpc cry- cryo cyc- cycc cypc cyre cyy- cyyc eccc ecce ecco eco- ecop ecpp ecrc ecrr eeee eeoc eerc eero eery eore epcc epec epee eper epoc epor eppc eppo eppp eppy epro eprp ercc erce ercp erec erer eroc eroe eroo erpe errc erre erro eryc erye eyec eyer eyey eype eyre eyry eyyr o-eo occc oce ocee ocpp ocre ocro ocrr oec- oecc oeec oere oeye oeyo oocr ooer oooo oore oory opec opep oper opo- opor oppo oppy opry opye orce orco ore- orec oreo orer orey oro- oroe oror oroy orpc orpe orro orry oyce oyee oyer oyre pccc pcce pcep pcer pcoe pcpp pcrc pcre pece peco pecr pecy peec peep peer peor pepe pepo per- perc pere pero perp perr pery peyo peyr poce poco poer poey poop poor pop- popc pope popo popp popy porc pore poro porr pory poyo poyr ppcc pper pppo pppp pprc ppye prcc prcp pre- prec pree prep prey pro- proc proe proo prop pyce pyep pyo- pype pypy pyr- pyre pyro pyry rccc rcep rcpo rcyc recc rece recp recr recy reep reop repe repo repp repr repy rere rero rery reye rocc roce roco roer roey roop roor rope ropo ropy rorc rore roro rory roye rpoe rpyc rrrr rype yccc ycee yeep yeer yepe yepp yere yero yerr yery yeye yeyo yeyr yoop yopo yopy yore yoro yory yoye yoyo ypcc yyyy