cccc cccl ccee ccel cclc cclx ccrc ccre ccrl ccxl cec- cece ceec ceel cel- celc cele cell cer- cerc cere cerl cexe clec clee cler clxx crcc crce crcr cre- crec cree crex cxxx e-cl eccc ecce eccl ecrc ecrl ecrr eeee eele eerc elce elec elee eler elex elle er-x ercc erce erec erel erer erle erll errc erre excl exec exel exer exrx lccc lcce lcer lcrl lece leel leer lele lell lerc lere lexx llcc lllc llll lrrc lrrr lxxx rccc rcle recc rece recr reel rele rell rere rexx rlee rrle rrrr xcel xeer xer- xexe xxxx