cccc cccp ccee ccoc ccpe ccpp ccpr ccrc ccre ccrp cec- cece ceco cecp ceec ceke ceop ceor cepc cepe cepo cepp cepr cer- cerc cere cero cerp cexe ckck ckco ckcx cker ckoc ckoo ckor ckpc ckpr ckrc coce cock coco cocp coep coex cok- coke coko cook coop cope copo copp copr cor- corc core cork coro corp corr coxe cpce cpep cper cpox cpre crcc crce crcr cre- crec cree creo crep crex crkc crkp croc croe crok croo crop cror crpc cxpo cxro cxxx eccc ecce ecco ecko eco- ecop ecpp ecrc ecrr eeee eeke eeoc eerc eero ekco ekek eker ekpe ekpo eore epcc epec epee eper epoc epor epox eppc eppo eppp epro eprp epxp er-x ercc erce ercp erec erer erke eroc eroe eroo erpe errc erre erro exco exec exer exo- exor expo expr exrx kc-x kccc kcck kccr kcec kcee kceo kcep kckc kckk kcko kckr kckx kcoe kcor kcox kcpc kcpo kcpr kcpx kcrc kcro kcrp kcrr kcrx kcxr keck keco kecr keek keep keer kekc keke keko keok kep- kepc kepe kepx ker- kerc kere kerk kero kerp kerr kerx kexo kexx kkck kkco kkcr kkex kkkk kkoo kkor kkpc kkpk kkrc kkre kkrk kkro kkrr kkrx kkxk kkxx kock kocp kokc koke kokk koko kokp kokr kokx kooc kook kooo koop koor kope kopp kopr korc kore kork koro korr koxc koxe koxr kpcc kpcr kpek kper kpke kpkk kpkr kpkx kpoc kpoe kpok kpoo kpop kppc kppk kppo kppp kppr kprc kpre kprk kpro kprp kprr kpxp kpxr krcc krce krco krec kree krek kreo krex krkc krke krkk krko krkr krkx kroc kroe krok kroo krop kror krox krpr krpx krrc krre krrk krro krrr krrx krxk krxo krxp krxr krxx kxeo kxex kxkc kxkk kxkx kxok kxoo kxor kxox kxpc kxpk kxpo kxpr kxrc kxre kxrk kxro kxrp kxrr kxrx kxxe kxxk kxxo kxxr kxxx o-eo occc oce ocee ocke ocpp ocre ocro ocrr oec- oecc oeec oere oker okko okok okor okpe okpo okre okro oocr ooer oooo oore opec opep oper opex opo- opor oppo orce orco ore- orec orek oreo orer orex orke orko oro- oroe orok oror orpc orpe orro oxep oxer oxo- oxox oxxo pccc pcce pcep pcer pcoe pcpp pcrc pcre pece peck peco pecr peec peek peep peer peke pekk peko peor pepe pepo per- perc pere perk pero perp perr poce pock poco poer poke poko pook poop poor pop- popc pope popo popp porc pore pork poro porr ppcc pper pppo pppp pprc prcc prcp pre- prec pree prek prep prex pro- proc proe proo prop prox rccc rcep rcpo recc rece reck recp recr reek reep reke reko reop repe repo repp repr rere rero rexx rocc roce rock roco roer roke rokk roko rokr rook roop roor roox rope ropo rorc rore rork roro roxo rpoe rrrr xeer xeko xer- xero xexe xoco xoro xorp xoxo xpcc xper xrep xxxo xxxx