cccc cccf ccee ccfc ccff ccoc cec- cece ceco ceec cef- cefc ceke cfcf cfco cfcy cfyk ckck ckco ckcy ckey ckoc ckoo ckoy coce cock coco cofc cofe coff cok- coke coko coky coof cook coyf coyo cyc- cycc cyfe cyke cyy- cyyc eccc ecce ecco ecef ecfc ecko ecky eco- eeee eefe eeke eeoc efco efeo effy efke ekco ekek ekfc eyck eyec eyey eyke f--k fccf fece feck feek fefc fefe feff fefo feke feko feof ffcc ffee ffff foce fock foco fofo foke foof fook fyce fyeo fyfe fyke kccc kcck kccy kcec kcee kceo kcey kcfc kcfo kcfy kckc kckf kckk kcko kcky kcoe kcof kcye kcyk kcyy keck keco keef keek kefc keff kekc keke keko keok keye keyf keyy kfcf kfco kfcy kfff kffk kfok kfoo kfoy kfyo kkck kkco kkcy kkkk kkoo kkoy kkyc kkyy kocf kock kofc kofe koff kofk kofo kofy kokc koke kokf kokk koko koky kooc kook kooo koye koyf koyo koyy kycc kyck kyee kykc kyke kykk kyky kyok kyoo kyoy kyyk kyyo kyyy o-eo occc oce ocee ocef ocke oec- oecc oeec oeye oeyo ofek off- offc offe offo offy okey okko okok okyo ooff oofy ooky oooo oyce oyee oyke yccc ycee yeck yeek yefe yeff yeke yeof yeye yeyo ykey ykko yock yoff yoke yoko yoky yoof yook yoye yoyo yyfe yyff yyyy