cccc cccs ccoc ccss ccst cctc cctt ckck ckco ckcs ckcy ckoc ckoo ckos ckot ckoy ckso ckst ckts ckty cock coco coct cok- coko coky cook coos coot cosc coso coss cost cosy cotc coto cots cott coty coyo coys coyt cscc csco cscs csks csos csot cstc csto csts csys ctos ctot ctsc ctss ctts cyc- cycc cycs cyst cyt- cyto cyy- cyyc k-os kccc kcck kcct kccy kckc kckk kcko kcky kcos kcot kcsc kcss kcst kcsy kctc kcto kcty kcyk kcys kcyt kcyy kkck kkco kkcs kkct kkcy kkkk kkoo kkot kkoy kkss kkst kktc kktk kkts kkty kkyc kkys kkyy kock kocs koct kokc kokk koko koks koky kooc kook kooo koos koot kos- kosc koso koss kost kosy kotc kotk koto kots kott koty koyo koyt koyy ksck ksco kscs kscy kskk ksko ksks ksky ksoc ksok ksoo ksos ksso ksss ksst kstc kstk ksto ksts kstt ksty ksyc ksyy ktcc ktck ktco ktcs ktcy ktkc ktkk ktko ktks ktkt ktoc ktok ktoo ktot ktoy ktsc ktso ktst ktsy kttc kttk ktto ktts kttt ktty kycc kyck kycs kyct kykc kykk kyks kyky kyok kyoo kyos kyot kyoy kysc kysk kyst kytc kyto kyts kytt kyty kyyk kyyo kyys kyyt kyyy occc occt ocks ocos oct- octo octs octy ocys okko okok okot okso okto okyo ooky oooo ooos oost oots ooty oscc osco osoo osos osso ossy ostc osts osyt oto- otok otoo otos otoy otso otto otts oyss oyst s-os sccc sccs scct sccy sck- scok scoo scot scsc scso scst sctc scto scts skot skss sky- skys skyy sock soco socs socy sokk soko sook soos soot sooy soso soss sost sotc sotk soto sots soyo soys soyt sscc sscs ssoc ssot sssc ssss sstc ssts stcc stcs stks stok stoo stos stot stoy stss sttc styk stys syck syco syso syss syst sytt syyk tccc tcos tctc tcts tkos tkts to-y tock toco toko toky took toos toot tosc tosk toso toss tost tosy totc toto tots tott toty toyo toys toyt tscc tsks tsos tsoy tsst tstc tsts tsys ttoy ttss tttt ttys tyck tyco tyss tyst tyto tytt tyty yccc yctc ykko yksc ykyt yock yoko yoks yoky yook yoot yoso yost yott yoyo ysco ytky yyyy