cccc ccci cccv ccgc ccic ccii ccir cciv ccoc ccrc ccrg ccri ccvi ccvo cgcc cgcg cgro cicc cici cico cicr cigi ciii ciko cikr cior circ ciri cirk ciro cirr civc civo ckck ckco ckcv ckgo ckoc ckoi ckoo ckor ckrc ckvo cock coco cogi cogo coir cok- coko cook cor- corc corg cori cork coro corr covo crcc crcr cric crig crik crkc croc crok croo cror cvcc cvii cvrg cvrr gc-c gccc gcic gcii gciv gcov gcrg gggg gick gicr gigg gigi gigo giog gioi girg giri girk giro girr gocr gogi gogo goog gooi gook goor gorg gori goro gorr govi grcc gric grig groc grog groi grok groo gror grov grrr gvvv i-go iccc icci icco iccr icgc icoc icor icrc icrr igcc igkc igoo igor igri iiii iiio iioi iioo iirc ikig ikki ikko ikoo ikri iocg ioci ioii ioio ioko iooi iooo iorg iori ircc ircg iri- iric irig irio irki iroc irov irrc irri ivic ivig ivor k-ci kccc kcci kcck kccr kccv kcgc kcgi kcgr kcic kcii kcir kciv kckc kckk kcko kckr kckv kcog kcor kcrc kcrg kcri kcro kcrr kcrv kcvi kcvk kcvo kcvr kcvv kgcc kgcr kgcv kggg kggi kggo kggr kgio kgir kgor kgrc kgrg kgri kgrk kgro kgrr kgrv kgvc kgvo kicc kicg kick kicr kigc kigo kiic kiii kiik kikc kiki kikk kiko kikr kioc kioi kiok kioo kirc kiri kirk kiro kirr kirv kivi kkci kkck kkco kkcr kkgo kkgr kkic kkik kkkk kkoo kkor kkov kkrc kkrk kkro kkrr kkrv kkvr kkvv koci kock kogg kogi kogo koii koir koiv kokc koki kokk koko kokr kooc koog kooi kook kooo koor koov korc korg kori kork koro korr korv kovc kovi kovk kovo kovr krcc krcg krci krco krgi krik krio kriv krkc krki krkk krko krkr krkv kroc krog kroi krok kroo kror krov krrc krrg krri krrk krro krrr krvc krvg krvi krvk krvo krvr krvv kvcc kvci kvck kvco kvcr kvcv kvgc kvgo kvic kvik kvir kviv kvoc kvog kvoi kvok kvoo kvor kvov kvrc kvrg kvri kvro kvrr kvrv kvvr kvvv occc occi ocro ocrr oggi ogog ogoi ogri ogro oici oick oigo oiii oiko okgo okic okir okko okok okor okro oocr oooo orci orco orgo ori- oric orig orio orko oro- orok oror orri orro orvr ovi- ovo- ovoo rccc rcgc rcic rcrg rcvr ricc rick rico rigg rigi rigo riki rikk riri rivo rocc rock roco rogg rogi rogo roig roik roio roir roki rokk roko rokr roog rooi rook roor rorc rori rork roro rovi rovo rrrr rv-c rvik vcci vgcc vic- vici vick vico vigo vigr viii viik viki viko virc virg viri virk viro virr vivi vivo vkor voic voio voir vooc voog voor vor- vori voro vovk vrci vrio vroc vvog vvvv