cccc cccp ccee ccoc ccpe ccpp cec- cece ceco cecp ceec ceop cepc cepe cepo cepp cexe coce coco cocp coep coex coop cope copo copp coxe cpce cpep cpox cxpo cxxx eccc ecce ecco eco- ecop ecpp eeee eeoc epcc epec epee epoc epox eppc eppo eppp epxp exco exec exo- expo o-eo occc oce ocee ocpp oec- oecc oeec oooo opec opep opex opo- oppo oxep oxo- oxox oxxo pccc pcce pcep pcoe pcpp pece peco peec peep pepe pepo poce poco poop pop- popc pope popo popp ppcc pppo pppp xexe xoco xoxo xpcc xxxo xxxx