cccc cccf cccl ccee ccel ccfc ccff ccfl cclc ccrc ccre ccrf ccrl cec- cece ceec ceel cef- cefc cel- celc cele celf cell cer- cerc cere cerf cerl cfcf cfcl cffr cfre clec clee clef cler crcc crce crcr cre- crec cree crfc crfl crlf e-cl eccc ecce eccl ecef ecfc ecfr ecrc ecrf ecrl ecrr eeee eefe eefl eele eerc elce elec elee elef eler elfc elfe elle ercc erce erec erel erer erfc erle erll errc erre fccf fece feel feer fefc fefe feff fele felf fell ferc fere ferr ffcc ffee ffff ffrr flcl flee fler frcc free frfc lccc lcce lcer lcfc lcfr lcrl lece leef leel leer lefe leff lele lell lerc lere lfcc llcc llef lllc llll lrfc lrrc lrrr rccc rcfc rcle recc rece recr reef reel refe reff refl refr rele rell rere rfef rffc rffl rlee rlef rrfc rrle rrrr