cccc ccci ccic ccii ccir ccoc ccrc ccri cicc cici cico cicr ciii ciko cikr cior circ ciri cirk ciro cirr ckck ckco ckcy ckoc ckoi ckoo ckor ckoy ckrc ckry cock coco coir cok- coko coky cook cor- corc cori cork coro corr cory coyo coyr crcc crcr cric crik crkc croc crok croo cror croy cry- cryo cyc- cycc cyrk cyy- cyyc iccc icci icco iccr icky icoc icor icrc icrr icry iiii iiio iioi iioo iirc ikki ikko ikky ikoo ikri ioci ioii ioio ioko iooi iooo iori ircc iri- iric irio iriy irki iroc irrc irri k-ci kccc kcci kcck kccr kccy kcic kcii kcir kckc kckk kcko kckr kcky kcor kcrc kcri kcro kcrr kcry kcyk kcyy kicc kick kicr kicy kiic kiii kiik kikc kiki kikk kiko kikr kioc kioi kiok kioo kirc kiri kirk kiro kirr kiyi kiyk kkci kkck kkco kkcr kkcy kkic kkik kkkk kkoo kkor kkoy kkrc kkrk kkro kkrr kkyc kkyy koci kock koii koir kokc koki kokk koko kokr koky kooc kooi kook kooo koor korc kori kork koro korr koyo koyy krcc krci krco krik krio krkc krki krkk krko krkr krky kroc kroi krok kroo kror kroy krrc krri krrk krro krrr krry kryk kryo kryy kycc kyck kycr kykc kykk kykr kyky kyok kyoo kyor kyoy kyrc kyrk kyro kyyi kyyk kyyo kyyy occc occi ocro ocrr oici oick oiii oiko oiry okic okir okko okok okor okro okyo oocr ooky oooo oory orci orco ori- oric orio orko oro- orok oror oroy orri orro orry oyri rccc rcic rcyc ricc rick rico riki rikk riri riyo rocc rock roco roik roio roir roki rokk roko rokr roky rooi rook roor rorc rori rork roro rory rrrr ryck ryki yccc yirk yirr ykko yock yoik yoki yoko yoky yook yori york yoro yory yoyo yyyy