cccc cccv ccee ccoc ccvo cec- cece ceco ceec ceke cevo ckck ckco ckcv ckoc ckoo ckvo coce cock coco cok- coke coko cook cove covo cvcc eccc ecce ecco ecko eco- eeee eeke eeoc ekco ekek evoe evoo evvk kccc kcck kccv kcec kcee kceo kckc kckk kcko kckv kcoe kcvk kcvo kcvv keck keco keek kekc keke keko keok keve kkck kkco kkkk kkoo kkov kkvv kock kokc koke kokk koko kooc kook kooo koov kovc kove kovk kovo kvcc kvce kvck kvco kvcv kvec kvoc kvoe kvok kvoo kvov kvvv o-eo occc oce ocee ocke oec- oecc oeec okko okok oooo ovee ovo- ovoo vecc veck veke veve vevo voce voke vooc vovk vvvv