-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 cel- celc cele celf cell cen- cene cer- cerc cere cerf cerl cern cfcf cfcl cfcn cffr cfln cfnr cfre cfrn clec clee clef cler cnel cnrc cnrr crcc crce crcr cre- crec cree cren crfc crfl crlf crne e-cl eccc ecce eccl ecef ecfc ecfr ecne ecrc ecrf ecrl ecrr eeee eefe eefl eefn eele eerc efen elce elec elee elef elen eler elfc elfe elle elne ence encl enee enel ener ennc enne ercc erce erec erel eren erer erfc erle erll erne errc erre fccf fcnl fece feel feen feer fefc fefe feff fele felf fell fene fenn ferc fere fern ferr ffcc ffee ffff ffrr flcl flee flen fler flnc fnlc frcc frcn free fren frfc lccc lcce lcer lcfc lcfr lcrl lece leef leel leen leer lefe leff lele lell lene lenn lerc lere lern lfcc llcc llef lllc llll lncr lner lrfc lrne lrrc lrrr nccc nccf nccn nccr ncec ncee ncef ncel ncen ncer ncfc ncfe nclc ncln nclr ncnc ncrc ncre necc nece necr neef neel neen neer nefe neff nefl nelc nele nelf nell nene nerc nere nerf nerl nerr nfer nfff nlcc nlcf nlec nler nnnn nren nrfc nrrc nrrl rccc rcfc rcle rcnl rcnr recc rece recr reef reel reen refe reff refl refn refr rele rell rene renn rere rfef rffc rffl rlee rlef rrfc rrle rrrr