cccc ccnc ccnr ccny ccoc ccrc ckck ckco ckcy cknc ckoc ckoo ckor ckoy ckrc ckry cnco cnrc cnrr cock coco cok- coko coky con- conc conk conn cono cony cook coon cor- corc cork corn coro corr cory coyn coyo coyr crcc crcr crkc croc crok cron croo cror croy cry- cryn cryo cyc- cycc cyn- cyno cyon cyrk cyy- cyyc cyyn kccc kcck kccr kccy kckc kckk kckn kcko kckr kcky kcno kcnr kcny kcon kcor kcrc kcrn kcro kcrr kcry kcyk kcyn kcyy kkck kkcn kkco kkcr kkcy kkkk kknn kkno kkon kkoo kkor kkoy kkrc kkrk kkrn kkro kkrr kkyc kkyy knck kncn knco kncr kncy knkk knnk knnr knoc knok knon knor knrk knro knry knyk knyn knyr kock kocn kokc kokk kokn koko kokr koky konc konk kono kony kooc kook koon kooo koor korc kork korn koro korr koyn koyo koyy krcc krcn krco krkc krkk krkn krko krkr krky krnk krnn krno krny kroc krok kroo kror kroy krrc krrk krrn krro krrr krry kryk kryn kryo kryy kycc kyck kycn kycr kykc kykk kykn kykr kyky kyno kynr kyok kyon kyoo kyor kyoy kyrc kyrk kyrn kyro kyyk kyyo kyyy nccc nccn nccr ncnc ncoc ncor ncrc nkok nkor nnnn nock noco noko non- nonn nono noo- nook noon nooo noor nor- norc nork norn noro norr nory noyo nroc nron nrrc nycc nyco nycy nyko nyny nyon nyro occc occn ocon ocro ocrr okko okno okny okok okon okor okro okyo onc- onco onno onon onor onoy oocr ooky oooo oory orco orko ornc orno orny oro- orok oron oror oroy orro orry oyon rccc rcnr rcon rcyc rnco rocc rock roco rokk roko rokr roky ronc ronk rono rony rook roon roor rorc rork roro rory royn rrrr ryck rynn ryon yccc ykko ynon yock yoko yoky yonk yono yook yoon york yorn yoro yory yoyn yoyo yron yryn yyyy