cccc ccci ccee ccic ccii ccir ccrc ccre ccri cec- cece ceci ceec ceke cer- cerc cere ceri cicc cici cicr ciee cier ciii cikr circ cire ciri cirk cirr ckck cker ckrc crcc crce crcr cre- crec cree crei cric crie crik crkc eccc ecce ecci ecrc ecri ecrr eeee eeke eerc eick eiec eiei eier eike eiki eire ekek eker ekki ercc erce erec erei erer eric erie erik erke erki errc erre iccc icci iccr icec icee icer icke icrc icre icrr iecc ieie iere ieri iiie iiii iirc ikee iker ikki ikri ircc iree irer iri- iric irie irki irrc irre irri k-ci kccc kcci kcck kccr kcec kcee kcei kcic kcie kcii kcir kckc kckk kckr kcrc kcri kcrr keck kecr keek keer keii keik keir kekc keke keki ker- kerc kere keri kerk kerr kicc kice kick kicr kier kiic kiii kiik kikc kiki kikk kikr kirc kiri kirk kirr kkci kkck kkcr kkic kkik kkkk kkrc kkre kkrk kkrr krcc krce krci krec kree krei krek krik krkc krke krki krkk krkr krrc krre krri krrk krrr rccc rcic recc rece reci reck recr reek reii reik reir reke reki rere reri ricc rice rick riek rier rike riki rikk rire riri rrrr