cccc cccp cccs ccoc ccpp ccps ccsp ccss ckck ckco ckcs ckoc ckoo ckos ckpc ckso cock coco cocp cok- coko cook coop coos copo copp cops cosc coso cosp coss cpcs cpos cpps cpsc cpsk cpso cscc csco cscs csks csos cspc csps k-os kccc kcck kckc kckk kcko kcos kcpc kcpo kcps kcsc kcsp kcss kkck kkco kkcs kkkk kkoo kkpc kkpk kkps kksp kkss kock kocp kocs kokc kokk koko kokp koks kooc kook kooo koop koos kopp kops kos- kosc koso kosp koss kpcc kpcs kpkk kpoc kpok kpoo kpop kppc kppk kppo kppp kpsc kpso kpsp ksck ksco kscs kskk ksko ksks ksoc ksok ksoo ksop ksos kspc kspk kspo ksps ksso ksss occc ocks ocos ocpp okko okok okpo okso oooo ooos oops opo- opos oppo opps oscc osco osoo osos osso pccc pccs pcks pcos pcpp pcps pcso pkcs pock poco pocs poko pook poop poos pop- popc popo popp pops posk poso poss ppcc ppcs ppos pppo pppp ppps ppss psco psoc psos pspp psps pssc psso s-os sccc sccp sccs sck- scok scoo scop scpo scps scsc scso skop skpc skpo skss sock soco socs sokk soko sook soop soos sopo sopp sops soso soss spcc spco spcs spoc spok spoo spop spos spps spso spsp spss sscc sscp sscs ssoc ssop sspc sspo ssps sssc ssss