-ene cccc cccf cccl ccee ccel ccfc ccff ccfl cclc ccnc ccne ccnf ccnr ccrc ccre ccrf ccrl cec- cece ceec ceel cef- cefc cefn ceke cel- celc cele celf cell cen- cene cer- cerc cere cerf cerl cern cfcf cfcl cfcn cffr cfln cfnr cfre cfrn ckck ckcl cken cker ckfr cklf ckln cknc ckrc clec clee clef clek cler cnel cnrc cnrr crcc crce crcr cre- crec cree cren crfc crfl crkc crkl crlf crne e-cl eccc ecce eccl ecef ecfc ecfr ecne ecrc ecrf ecrl ecrr eeee eefe eefl eefn eeke eele eerc efen efke ekek eken eker ekfc ekne elce elec elee elef elek elen eler elfc elfe elke elle elne ence encl enee enel ener enke enkr ennc enne ercc erce erec erel eren erer erfc erke erle erll erne errc erre f--k fccf fcnl fece feck feek feel feen feer fefc fefe feff feke fele felf felk fell fene fenk fenn ferc fere ferk fern ferr ffcc ffee ffff ffrr flcl flee flen fler flnc fnlc frcc frcn free fren frfc kccc kcck kccl kccr kcec kcee kcel kcfc kcfl kcfn kckc kckf kckk kckl kckn kckr kclc kcle kclf kclk kcll kcln kclr kcnr kcrc kcrn kcrr keck kecr keef keek keel keen keer kefc keff kefr kekc keke kekl kele kelf kelk kell keln ken- kene kenk kenl kenn kenr ker- kerc kere kerf kerk kerl kern kerr kfcf kfcr kfel kfer kfff kffk kffn kflc kflf kfll kfln kfnc kfnf kfnk kfnl kfnn kfrc kfre kfrn kfrr kkck kkcl kkcn kkcr kken kkfn kkfr kkkk kklc kklf kkll kkln kkne kknn kkrc kkre kkrf kkrk kkrl kkrn kkrr klcc klce klck klcl klcn klcr klec klee klef klek klen kler klfc klfe klff klfn klkc klkk klkl klkn klkr kllc klle kllk klnc klne klnn klrc klrf klrk klrn klrr knce knck kncn kncr knec knee knef knek knel knen knfl knfr knkk knlc knlf knlr knnk knnr knrk krcc krce krcl krcn krec kree kref krek kren krfc krfe krff krfn krkc krke krkk krkn krkr krlc krle krlf krln krne krnk krnn krrc krre krrf krrk krrl krrn krrr lccc lcce lcer lcfc lcfr lcrl lece leck leef leek leel leen leer lefe leff leke lekk lele lell lene lenk lenn lerc lere lerk lern lfcc llcc llef lllc llll lncr lner lnnk lrfc lrne lrrc lrrr nccc nccf nccn nccr ncec ncee ncef ncel ncen ncer ncfc ncfe nclc ncln nclr ncnc ncrc ncre necc nece neck necr neef neel neen neer nefe neff nefl neke nelc nele nelf nell nene nerc nere nerf nerk nerl nerr nfer nfff nkfc nkrf nlcc nlcf nlec nler nnnn nren nrfc nrrc nrrl rccc rcfc rcle rcnl rcnr recc rece reck recr reef reek reel reen refe reff refl refn refr reke rele rell rene renk renn rere rfef rffc rffl rkkf rlee rlef rrfc rrle rrrr