cccc ccci cccv ccic ccii ccir cciv ccoc ccrc ccri ccvi ccvo cicc cici cico cicr ciii ciko cikr cior circ ciri cirk ciro cirr civc civo civy ckck ckco ckcv ckcy ckoc ckoi ckoo ckor ckoy ckrc ckry ckvo cock coco coir cok- coko coky cook cor- corc cori cork coro corr cory covo covy coyo coyr crcc crcr cric crik crkc croc crok croo cror croy cry- cryo cvcc cvii cvrr 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 irov irrc irri ivic ivor ivry k-ci kccc kcci kcck kccr kccv kccy kcic kcii kcir kciv kckc kckk kcko kckr kckv kcky kcor kcrc kcri kcro kcrr kcrv kcry kcvi kcvk kcvo kcvr kcvv kcvy kcyk kcyy kicc kick kicr kicy kiic kiii kiik kikc kiki kikk kiko kikr kioc kioi kiok kioo kirc kiri kirk kiro kirr kirv kivi kivy kiyi kiyk kkci kkck kkco kkcr kkcy kkic kkik kkkk kkoo kkor kkov kkoy kkrc kkrk kkro kkrr kkrv kkvr kkvv kkyc kkyy koci kock koii koir koiv kokc koki kokk koko kokr koky kooc kooi kook kooo koor koov korc kori kork koro korr korv kovc kovi kovk kovo kovr koyo koyy krcc krci krco krik krio kriv krkc krki krkk krko krkr krkv krky kroc kroi krok kroo kror krov kroy krrc krri krrk krro krrr krry krvc krvi krvk krvo krvr krvv kryk kryo kryy kvcc kvci kvck kvco kvcr kvcv kvcy kvic kvik kvir kviv kvoc kvoi kvok kvoo kvor kvov kvrc kvri kvro kvrr kvrv kvvr kvvv kycc kyck kycr kyiv kykc kykk kykr kykv 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 orvr ovi- ovo- ovoo oyri rccc rcic rcvr rcyc ricc rick rico riki rikk riri rivo riyo rocc rock roco roik roio roir roki rokk roko rokr roky rooi rook roor rorc rori rork roro rory rovi rovo rrrr rv-c rvik ryck ryki vcci vic- vici vick vico viii viik viki viko virc viri virk viro virr viry vivi vivo vivy vkor voic voio voir voky vooc voor vor- vori voro vory vovk voyi vrci vrio vroc vvvv vyir vyrk yccc yirk yirr yivo ykko yock yoik yoki yoko yoky yook yori york yoro yory yoyo yvor yyyy