cccc ccnc ccny ccoc ckck ckco ckcy cknc ckoc ckoo ckoy cnco cock coco cok- coko coky con- conc conk conn cono cony cook coon coyn coyo cyc- cycc cyn- cyno cyon cyy- cyyc cyyn kccc kcck kccy kckc kckk kckn kcko kcky kcno kcny kcon kcyk kcyn kcyy kkck kkcn kkco kkcy kkkk kknn kkno kkon kkoo kkoy kkyc kkyy knck kncn knco kncy knkk knnk knoc knok knon knyk knyn kock kocn kokc kokk kokn koko koky konc konk kono kony kooc kook koon kooo koyn koyo koyy kycc kyck kycn kykc kykk kykn kyky kyno kyok kyon kyoo kyoy kyyk kyyo kyyy nccc nccn ncnc ncoc nkok nnnn nock noco noko non- nonn nono noo- nook noon nooo noyo nycc nyco nycy nyko nyny nyon occc occn ocon okko okno okny okok okon okyo onc- onco onno onon onoy ooky oooo oyon yccc ykko ynon yock yoko yoky yonk yono yook yoon yoyn yoyo yyyy