cccc cccs cccv ccoc ccss ccvo ccvs ckck ckco ckcs ckcv ckcy ckoc ckoo ckos ckoy ckso ckvo cock coco cok- coko coky cook coos cosc coso coss cosy covo covy coyo coys cscc csco cscs csks csos csys cvcc cvss cyc- cycc cycs cyy- cyyc k-os kccc kcck kccv kccy kckc kckk kcko kckv kcky kcos kcsc kcss kcsy kcvk kcvo kcvs kcvv kcvy kcyk kcys kcyy kkck kkco kkcs kkcy kkkk kkoo kkov kkoy kkss kkvv kkyc kkys kkyy kock kocs kokc kokk koko koks koky kooc kook kooo koos koov kos- kosc koso koss kosy kovc kovk kovo koyo koyy ksck ksco kscs kscv kscy kskk ksko ksks ksky ksoc ksok ksoo ksos ksso ksss ksvc ksvy ksyc ksyv ksyy kvcc kvck kvco kvcs kvcv kvcy kvoc kvok kvoo kvov kvsc kvso kvss kvsv kvvs kvvv kycc kyck kycs kykc kykk kyks kykv kyky kyok kyoo kyos kyoy kysc kysk kyyk kyyo kyys kyyy occc ocks ocos ocys okko okok okso okyo ooky oooo ooos oscc osco osoo osos osov osso ossy ovcs ovo- ovoo oyss s-os sccc sccs sccy sck- scok scoo scsc scso skov skss sky- skys skyy sock soco socs socy sokk soko sook soos sooy soso soss sosv sovo sovs soyo soys sscc sscs ssoc sssc ssss svcc svcs svoy svsc syck syco syso syss syyk voks voky vooc voso voss vovk voys vssc vvvv vyos vyso vyss yccc ykko yksc yock yoko yoks yoky yook yoso yoyo ysco yyyy