cccc ccci ccgc ccic ccii ccir ccoc ccrc ccrg ccri cgcc cgcg cgro cicc cici cico cicr cigi ciii ciko cikr cior circ ciri cirk ciro cirr ckck ckco ckgo ckoc ckoi ckoo ckor ckrc cock coco cogi cogo coir cok- coko cook cor- corc corg cori cork coro corr crcc crcr cric crig crik crkc croc crok croo cror gc-c gccc gcic gcii 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 grcc gric grig groc grog groi grok groo gror grrr 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 irrc irri k-ci kccc kcci kcck kccr kcgc kcgi kcgr kcic kcii kcir kckc kckk kcko kckr kcog kcor kcrc kcrg kcri kcro kcrr kgcc kgcr kggg kggi kggo kggr kgio kgir kgor kgrc kgrg kgri kgrk kgro kgrr kicc kicg kick kicr kigc kigo kiic kiii kiik kikc kiki kikk kiko kikr kioc kioi kiok kioo kirc kiri kirk kiro kirr kkci kkck kkco kkcr kkgo kkgr kkic kkik kkkk kkoo kkor kkrc kkrk kkro kkrr koci kock kogg kogi kogo koii koir kokc koki kokk koko kokr kooc koog kooi kook kooo koor korc korg kori kork koro korr krcc krcg krci krco krgi krik krio krkc krki krkk krko krkr kroc krog kroi krok kroo kror krrc krrg krri krrk krro krrr 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 rccc rcgc rcic rcrg ricc rick rico rigg rigi rigo riki rikk riri rocc rock roco rogg rogi rogo roig roik roio roir roki rokk roko rokr roog rooi rook roor rorc rori rork roro rrrr