cccc cccf cccl ccee ccel ccfc ccff ccfl cclc ccrc ccre ccrf ccrl cec- cece ceec ceel cef- cefc ceke cel- celc cele celf cell cer- cerc cere cerf cerl cfcf cfcl cffr cfre ckck ckcl cker ckfr cklf ckrc clec clee clef clek cler crcc crce crcr cre- crec cree crfc crfl crkc crkl crlf e-cl eccc ecce eccl ecef ecfc ecfr ecrc ecrf ecrl ecrr eeee eefe eefl eeke eele eerc efke ekek eker ekfc elce elec elee elef elek eler elfc elfe elke elle ercc erce erec erel erer erfc erke erle erll errc erre f--k fccf fece feck feek feel feer fefc fefe feff feke fele felf felk fell ferc fere ferk ferr ffcc ffee ffff ffrr flcl flee fler frcc free frfc kccc kcck kccl kccr kcec kcee kcel kcfc kcfl kckc kckf kckk kckl kckr kclc kcle kclf kclk kcll kclr kcrc kcrr keck kecr keef keek keel keer kefc keff kefr kekc keke kekl kele kelf kelk kell ker- kerc kere kerf kerk kerl kerr kfcf kfcr kfel kfer kfff kffk kflc kflf kfll kfrc kfre kfrr kkck kkcl kkcr kkfr kkkk kklc kklf kkll kkrc kkre kkrf kkrk kkrl kkrr klcc klce klck klcl klcr klec klee klef klek kler klfc klfe klff klkc klkk klkl klkr kllc klle kllk klrc klrf klrk klrr krcc krce krcl krec kree kref krek krfc krfe krff krkc krke krkk krkr krlc krle krlf krrc krre krrf krrk krrl krrr lccc lcce lcer lcfc lcfr lcrl lece leck leef leek leel leer lefe leff leke lekk lele lell lerc lere lerk lfcc llcc llef lllc llll lrfc lrrc lrrr rccc rcfc rcle recc rece reck recr reef reek reel refe reff refl refr reke rele rell rere rfef rffc rffl rkkf rlee rlef rrfc rrle rrrr