cccc ccee ccoc cec- cece ceco ceec ceke ckck ckco ckcy ckey ckoc ckoo ckoy coce cock coco cok- coke coko coky cook coyo cyc- cycc cyke cyy- cyyc eccc ecce ecco ecko ecky eco- eeee eeke eeoc ekco ekek eyck eyec eyey eyke kccc kcck kccy kcec kcee kceo kcey kckc kckk kcko kcky kcoe kcye kcyk kcyy keck keco keek kekc keke keko keok keye keyy kkck kkco kkcy kkkk kkoo kkoy kkyc kkyy kock kokc koke kokk koko koky kooc kook kooo koye koyo koyy kycc kyck kyee kykc kyke kykk kyky kyok kyoo kyoy kyyk kyyo kyyy o-eo occc oce ocee ocke oec- oecc oeec oeye oeyo okey okko okok okyo ooky oooo oyce oyee oyke yccc ycee yeck yeek yeke yeye yeyo ykey ykko yock yoke yoko yoky yook yoye yoyo yyyy