cccc cccf ccci cccs ccfc ccff ccfi ccic ccii ccis ccoc ccsf ccsi ccss cfcf cfco cfcs cfos cfsi cicc cici cico cics ciff cifs ciii ciis ciko cios cis- cisc cisk ciss ckck ckco ckcs ckfi ckoc ckoi ckoo ckos ckso cock coco cofc coff cofi cofs coif cois cok- coko coof cook coos cosc cosi coso coss cscc cscf csci csco cscs csfc csik csio csis csks csos f--k fccf fcic fcii fcsc ffcc ffff ffii ffss ficc fick fico fics fifc fiff fifi fifo fiii fiki fios fisc fisi fisk fiss foci fock foco focs fofo fois foki foof fook foos fosi foso foss fscc fsck fsfi fsfo fssc fssf iccc iccf icci icco iccs icis icks icoc icos icsc icsi icss ifco ific ifis ifsc ifso iiii iiio iiis iioi iioo iios iisc iisi ikki ikko ikoo ioci iofc ioii ioio ioko ioof iooi iooo ioos ioso iscc isci isco iscs isfc isic isis iskf isko iso- isoc isof isok isos issc issf issi isso isss k-ci k-os kccc kcci kcck kcfc kcfi kcfo kcic kcif kcii kcis kckc kckf kckk kcko kcof kcos kcsc kcsf kcsi kcss kfcf kfco kfcs kfff kffk kfio kfis kfok kfoo kfsi kfsk kicc kick kics kiff kifs kiic kiii kiik kiis kikc kikf kiki kikk kiko kioc kioi kiok kioo kisc kisf kisi kisk kiso kiss kkci kkck kkco kkcs kkfi kkfs kkic kkik kkkk kkoo kksf kksi kkss kocf koci kock kocs kofc koff kofi kofk kofo koii kokc kokf koki kokk koko koks kooc kooi kook kooo koos kos- kosc kosf kosi koso koss ksci ksck ksco kscs ksfc ksfi ksfo ksif ksii ksik ksis kskf kskk ksko ksks ksoc ksof ksoi ksok ksoo ksos kssi ksso ksss occc occi ocis ocks ocos off- offc offo offs ofik oici oick oiii oiko oiks oios oisc okic okko okok oksi okso ooff oofs oooo ooos oosi oscc osci osco osii osik osis oski osoi osoo osos ossi osso s-ic s-ii s-os sccc sccs scfc scfi sci- scic scif scio scis sck- scok scoo scsc scsi scso sfcc sfco sfcs sffc sfio sfos sfss sicc sici sick sico sics siff sifo siik siki siko siks sios sisc sisi sisk siss skfc skic skif skik skio skis skss soci sock soco socs sofi sofo soic soif soik sois soki sokk soko soof sook soos sosi soso soss sscc ssci sscs ssfc ssis ssoc sssc sssf sssi ssss