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 ckck ckco ckcv ckoc ckoi ckoo ckor ckrc ckvo cock coco coir cok- coko cook cor- corc cori cork coro corr covo cozi cozz crcc crcr crcz cric crik crkc croc crok croo cror croz cvcc cvii cvrr iccc icci icco iccr icoc icor icrc icrr iiii iiio iioi iioo iirc ikki ikko ikoo ikri ioci ioii ioio ioko iooi iooo iori ircc iri- iric irio irki iroc irov irrc irri ivic ivor izki izzo k-ci kccc kcci kcck kccr kccv kcic kcii kcir kciv kckc kckk kcko kckr kckv kckz kcor kcoz kcrc kcri kcro kcrr kcrv kcrz kcvi kcvk kcvo kcvr kcvv kczo kczz kicc kick kicr kiic kiii kiik kikc kiki kikk kiko kikr kikz kioc kioi kiok kioo kioz kirc kiri kirk kiro kirr kirv kivi kizz kkci kkck kkco kkcr kkic kkik kkkk kkoo kkor kkov kkoz kkrc kkrk kkro kkrr kkrv kkrz kkvr kkvv kkzz koci kock koii koir koiv kokc koki kokk koko kokr kokz kooc kooi kook kooo koor koov kooz korc kori kork koro korr korv kovc kovi kovk kovo kovr kozi kozk kozo kozr krcc krci krco krik krio kriv kriz krkc krki krkk krko krkr krkv krkz kroc kroi krok kroo kror krov kroz krrc krri krrk krro krrr krrz krvc krvi krvk krvo krvr krvv krvz krzi krzk krzr krzz kvcc kvci kvck kvco kvcr kvcv kvic kvik kvir kviv kvoc kvoi kvok kvoo kvor kvov kvoz kvrc kvri kvro kvrr kvrv kvvr kvvv kvvz kzcr kzio kziz kzkr kzkz kzoi kzoo kzor kzoz kzrc kzrk kzro kzrr kzrv kzrz kzzi kzzk kzzo kzzr kzzv kzzz occc occi ocro ocrr oici oick oiii oiko okic okir okko okok okor okro oocr oooo oozi orci orco ori- oric orio orko oro- orok oror oroz orri orro orvr orzk orzo ovi- ovo- ovoo rccc rcic rcvr ricc rick rico riki rikk rioz riri rivo rizi rizk rizz rocc rock roco roik roio roir roiz roki rokk roko rokr rooi rook roor rooz rorc rori rork roro rovi rovo rozi rozz rrrr rv-c rvik vcci vic- vici vick vico viii viik viki viko virc viri virk viro virr vivi vivo vkor vkzv voic voio voir voiz vooc voor vor- vori voro vovk vrci vrio vroc vvvv z-ro zick zico ziki zikr zirc ziri ziro zizi zizz zoco zoic zoio zoo- zook zorc zori zork zoro zovk zozo zrcv zzzz