cccc cccf ccci ccfc ccff ccfi ccgc ccic ccii ccir ccoc ccrc ccrf ccrg ccri cfcf cfco cffr cfgo cfor cfrg cgcc cgcg cgfc cgro cicc cici cico cicr ciff cifg cigi ciii ciko cikr cior circ ciri cirk ciro cirr ckck ckco ckfi ckfr ckgo ckoc ckoi ckoo ckor ckrc cock coco cofc coff cofi cogi cogo coif coir cok- coko coof cook cor- corc corf corg cori cork coro corr crcc crcr crfc cric crif crig crik crkc croc crok croo cror f--k fccf fcic fcii ffcc ffff ffii ffrr ficc fick fico fifc fiff fifi fifo figc figg figo fiii fiki fior firk foci fock foco fofo fogg fogi fogo foki foof fook for- forg fori fork foro forr frcc frfc fric frig frik frio frog gc-c gccc gccf gcfc gcic gcii gcrg gfcf gfci gfor ggfg gggg gick gicr giff gigg gigi gigo giog gioi girg giri girk giro girr gocr goff gofr gogi gogo goif goof goog gooi gook goor gorf gorg gori goro gorr grcc gric grif grig groc grof grog groi grok groo gror grrr i-go iccc iccf icci icco iccr icgc icoc icor icrc icrf icrr ifco ific ifor ifrf ifri igcc igfc igkc igoo igor igri iiii iiio iioi iioo iirc ikig ikki ikko ikoo ikri iocg ioci iofc ioii ioio ioko ioof iooi iooo iorg iori ircc ircg iri- iric irig irio irki iroc irrc irri k-ci kccc kcci kcck kccr kcfc kcfg kcfi kcfo kcgc kcgf kcgi kcgr kcic kcif kcii kcir kckc kckf kckk kcko kckr kcof kcog kcor kcrc kcrg kcri kcro kcrr kfcf kfco kfcr kfff kffg kffk kfgi kfgo kfgr kfig kfio kfir kfog kfok kfoo kfor kfrc kfrg kfri kfro kfrr kgcc kgcr kgff kgfk kggf kggg kggi kggo kggr kgif kgio kgir kgor kgrc kgrg kgri kgrk kgro kgrr kicc kicg kick kicr kiff kifg kifr kigc kigo kiic kiii kiik kikc kikf kiki kikk kiko kikr kioc kioi kiok kioo kirc kirf kiri kirk kiro kirr kkci kkck kkco kkcr kkfg kkfi kkfr kkgo kkgr kkic kkik kkkk kkoo kkor kkrc kkrf kkrk kkro kkrr kocf koci kock kofc koff kofg kofi kofk kofo kogg kogi kogo koii koir kokc kokf koki kokk koko kokr kooc koog kooi kook kooo koor korc korf korg kori kork koro korr krcc krcg krci krco krfc krff krfg krfo krgi krik krio krkc krki krkk krko krkr kroc krof krog kroi krok kroo kror krrc krrf krrg krri krrk krro krrr occc occi ocro ocrr ofcr off- offc offo offr ofgo ofik ofor ogfr oggi ogog ogoi ogri ogro oici oick oigo oiii oiko okgo okic okir okko okok okor okro oocr ooff oooo orci orco orff orfi orgo ori- oric orif orig orio orko oro- orof orok oror orri orro rccc rcfc rcgc rcic rcrg rffc rfic ricc rick rico riff rigg rigi rigo riif riki rikk riri rkkf rocc rock roco rofc roff rofo rogg rogi rogo roif roig roik roio roir roki rokk roko rokr roof roog rooi rook roor rorc rori rork roro rrfc rrif rrrr