cccc cccs ccoc ccrc ccrs ccss ckck ckco ckcs ckcy ckoc ckoo ckor ckos ckoy ckrc ckry ckso cock coco cok- coko coky cook coos cor- corc cork coro corr cors cory cosc coso coss cosy coyo coyr coys crcc crcr crkc croc crok croo cror croy crss cry- cryo crys cscc csco cscr cscs csks csor csos csrc csrs cssr csys cyc- cycc cycs cyrk cyrs cyy- cyyc k-os kccc kcck kccr kccy kckc kckk kcko kckr kcky kcor kcos kcrc kcro kcrr kcrs kcry kcsc kcsr kcss kcsy kcyk kcys kcyy kkck kkco kkcr kkcs kkcy kkkk kkoo kkor kkoy kkrc kkrk kkro kkrr kkrs kksr kkss kkyc kkys kkyy kock kocs kokc kokk koko kokr koks koky kooc kook kooo koor koos korc kork koro korr kors kos- kosc koso kosr koss kosy koyo koyy krcc krco krcs krkc krkk krko krkr krks krky kroc krok kroo kror kros kroy krrc krrk krro krrr krrs krry krsc krsk krsr krss krsy kryk kryo kryy ksck ksco kscr kscs kscy kskk ksko kskr ksks ksky ksoc ksok ksoo ksor ksos ksro ksrr ksrs ksry ksso kssr ksss ksyc ksyr ksyy kycc kyck kycr kycs kykc kykk kykr kyks kyky kyok kyoo kyor kyos kyoy kyrc kyrk kyro kyrs kysc kysk kysr kyyk kyyo kyys kyyy occc ocks ocos ocro ocrr ocrs ocys okko okok okor okro okso okyo oocr ooky oooo ooos oory orco orcs orko oro- orok oror oros oroy orro orrs orry orsk orso orsy orys oscc osco osoo osor osos osro osso ossy oyss rccc rccs rcos rcsc rcss rcyc rkos rkss rocc rock roco rocs rokk roko rokr roks roky rook roor roos rorc rork roro rory rosc roso ross rosy roys rrrr rscc rscs rscy rsos ryck rysy s-os sccc sccs sccy sck- scok scoo scor scr- scrc scrs scry scsc scso scsr skor skss sky- skyr skys skyy sock soco socr socs socy sokk soko sook soor soos sooy soro sorr sors sory soso soss soyo soys srcc sros sscc sscs ssoc ssrc ssrs sssc ssss syck syco sycr syro syrs syry syso syss syyk yccc ykko yksc yock yoko yoks yoky yook york yoro yory yoso yoyo ysco yyyy