cccc cccl ccee ccel cclc cclx ccoc ccrc ccre ccrl ccxl cec- cece ceco ceec ceel cel- celc cele cell celo ceol ceor cer- cerc cere cerl cero cexe clec clee cleo cler cloe cloo clor clox clro clxx coce coco coel coex col- cole coll colo cool cor- corc core corl coro corr coxe crcc crce crcr cre- crec cree creo crex croc croe crol croo cror cxro cxxx e-cl eccc ecce eccl ecco eco- ecol ecrc ecrl ecrr eeee eele eeoc eerc eero elce elco elec elee eleo eler elex elle ello elro eole eolo eore eorl er-x ercc erce erec erel erer erle erll eroc eroe erol eroo errc erre erro excl exco exec exel exer exo- exor exrx lccc lcce lcer lcor lcrl lece leco leel leer lele lell lelo leoc leor leox lerc lere lero lexx llcc lllc llll lloc lloo locc loce loco lole loll lolo looc looe lool loor lore loro lox- loxo lroc lrrc lrrr lxxx o-eo occc oce ocee oclc ocre ocrl ocro ocrr oec- oecc oeec oele oere olcc ole- oleo oler olle ollo olor oocr ooer oolo oooo oore orce orco ore- orec orel oreo orer orex orle orlo oro- oroe oror orro oxer oxo- oxox oxxo rccc rcle recc rece recr reel rele rell relo reol rere rero rexx rlee rocc roce roco roel roer role roll rolo rool roor roox rorc rore roro roxo rrle rrrr xcel xeer xer- xero xexe xloc xlox xoco xolo xoro xoxo xxxo xxxx