cccc ccci ccee ccic ccii ccir ccoc ccrc ccre ccri cec- cece ceci ceco ceec ceke ceor cer- cerc cere ceri cero cicc cici cico cicr ciee cier ciii ciko cikr cior circ cire ciri cirk ciro cirr ckck ckco cker ckoc ckoi ckoo ckor ckrc coce cock coco coir cok- coke coko cook cor- corc core cori cork coro corr crcc crce crcr cre- crec cree crei creo cric crie crik crkc croc croe crok croo cror eccc ecce ecci ecco ecko eco- ecrc ecri ecrr eeee eeke eeoc eerc eero eick eico eiec eiei eier eike eiki eiko eire ekco ekek eker ekki ekoi eoir eore eori ercc erce erec erei erer eric erie erik erio erke erki eroc eroe eroi eroo errc erre erro iccc icci icco iccr icec icee icer icke icoc icor icrc icre icrr iecc ieie ieio iere ieri iiie iiii iiio iioi iioo iirc ikee iker ikki ikko ikoo ikri ioci ioee ioii ioio ioke ioko iooi iooo iore iori ircc iree irer iri- iric irie irio irki iroc irrc irre irri k-ci kccc kcci kcck kccr kcec kcee kcei kceo kcic kcie kcii kcir kckc kckk kcko kckr kcoe kcor kcrc kcri kcro kcrr keck keco kecr keek keer keii keik keio keir kekc keke keki keko keok ker- kerc kere keri kerk kero kerr kicc kice kick kicr kier kiic kiii kiik kikc kiki kikk kiko kikr kioc kioe kioi kiok kioo kirc kiri kirk kiro kirr kkci kkck kkco kkcr kkic kkik kkkk kkoo kkor kkrc kkre kkrk kkro kkrr koci kock koei koii koir kokc koke koki kokk koko kokr kooc kooi kook kooo koor korc kore kori kork koro korr krcc krce krci krco krec kree krei krek kreo krik krio krkc krke krki krkk krko krkr kroc kroe kroi krok kroo kror krrc krre krri krrk krro krrr o-eo occc occi oce ocee ocke ocre ocro ocrr oec- oecc oeec oere oici oick oier oiii oike oiko oire oker okic okie okir okko okok okor okre okro oocr ooer oooo oore orce orci orco ore- orec orek oreo orer ori- oric orie orio orke orko oro- oroe orok oror orri orro rccc rcic recc rece reci reck recr reek reii reik reir reke reki reko rere reri rero ricc rice rick rico riek rier rike riki rikk rire riri rocc roce rock roco roer roik roio roir roke roki rokk roko rokr rooi rook roor rorc rore rori rork roro rrrr