cccc ccci cccp ccee ccic ccii ccip ccir ccpe ccpp ccpr ccrc ccre ccri ccrp cec- cece ceci cecp ceec ceip cepc cepe cepp cepr cer- cerc cere ceri cerp cicc cici cicr ciee cier ciii cipp circ cire ciri cirr cpce cpep cper cpic cpre cpri crcc crce crcr cre- crec cree crei crep cric crie crip crpc eccc ecce ecci ecip ecpp ecrc ecri ecrr eeee eerc eiec eiei eier eipr eire epcc epci epec epee eper epi- epic epie epip eppc eppp eprp ercc erce ercp erec erei erer eric erie erpe errc erre iccc icci iccp iccr icec icee icer icpc icrc icre icrr iecc ieie iere ieri iiie iiii iirc ipcc ipce ipec iper ipie ippc ippr ipri ircc iree irer iri- iric irie irip irpc irpe irrc irre irri pccc pcce pcep pcer pcip pcpp pcrc pcre pece peci pecr peec peep peer peip peir pepe pepi per- perc pere peri perp perr picc pice pici picr piep pier piip pipe pipi pipp pirc pire piri pirr ppcc ppci pper ppic ppie pppp pprc prcc prcp pre- prec pree prep pri- prie prii prri rccc rcep rcic rcpi recc rece reci recp recr reep reii reir repe repi repp repr rere reri ricc rice riep rier ripe ripi ripp ripr rire riri rpii rrrr