cccc ccci cccs ccic ccii ccir ccis ccoc ccrc ccri ccrs ccsi ccss cicc cici cico cicr cics ciii ciis ciko cikr cior cios circ ciri cirk ciro cirr cirs cis- cisc cisk cisr ciss ckck ckco ckcs ckoc ckoi ckoo ckor ckos ckrc ckso cock coco coir cois cok- coko cook coos cor- corc cori cork coro corr cors cosc cosi coso coss crcc crcr cric crik cris crkc croc crok croo cror crss cscc csci csco cscr cscs csik csio csir csis csks csor csos csrc csrs cssr iccc icci icco iccr iccs icis icks icoc icor icos icrc icrr icrs icsc icsi icsr icss iiii iiio iiis iioi iioo iios iirc iirs iisc iisi iisr ikki ikko ikoo ikri ioci ioii ioio ioko iooi iooo ioos iori iors ioso ircc ircs iri- iric irio iris irki irks iroc irrc irri irrs iscc isci isco iscr iscs isic isis isko iso- isoc isok isor isos isri issc issi isso issr isss k-ci k-os kccc kcci kcck kccr kcic kcii kcir kcis kckc kckk kcko kckr kcor kcos kcrc kcri kcro kcrr kcrs kcsc kcsi kcsr kcss kicc kick kicr kics kiic kiii kiik kiis kikc kiki kikk kiko kikr kioc kioi kiok kioo kirc kiri kirk kiro kirr kirs kisc kisi kisk kiso kisr kiss kkci kkck kkco kkcr kkcs kkic kkik kkkk kkoo kkor kkrc kkrk kkro kkrr kkrs kksi kksr kkss koci kock kocs koii koir kokc koki kokk koko kokr koks kooc kooi kook kooo koor koos korc kori kork koro korr kors kos- kosc kosi koso kosr koss krcc krci krco krcs krik krio kris krkc krki krkk krko krkr krks kroc kroi krok kroo kror kros krrc krri krrk krro krrr krrs krsc krsk krsr krss ksci ksck ksco kscr kscs ksii ksik ksir ksis kskk ksko kskr ksks ksoc ksoi ksok ksoo ksor ksos ksro ksrr ksrs kssi ksso kssr ksss occc occi ocis ocks ocos ocro ocrr ocrs oici oick oiii oiko oiks oios oisc okic okir okko okok okor okro oksi okso oocr oooo ooos oosi orci orco orcs ori- oric orio oris orko oro- orok oror oros orri orro orrs orsi orsk orso oscc osci osco osii osik osis oski osoi osoo osor osos osro ossi osso rccc rccs rcic rcis rcos rcsc rcsi rcss ricc rick rico rics riis riki rikk rios riri rirs risc risi risk riso riss rkos rkss rocc rock roco rocs roik roio roir rois roki rokk roko rokr roks rooi rook roor roos rorc rori rork roro rosc rosi roso ross rrrr rscc rscs rsis rsos s-ic s-ii s-os sccc sccs sci- scic scio scir scis sck- scok scoo scor scr- scrc scri scrs scsc scsi scso scsr sicc sici sick sico sics siik siki siko sikr siks sior sios sirc siri sirk siro sirr sirs sisc sisi sisk siss skic skik skio skir skis skor skss soci sock soco socr socs soic soik soir sois soki sokk soko sook soor soos sori soro sorr sors sosi soso soss srcc sris sros sscc ssci sscs ssis ssoc ssrc ssri ssrs sssc sssi ssss