cccc cccf cccl ccee ccel ccfc ccff ccfl cclc cclx ccoc ccrc ccre ccrf ccrl ccxl cec- cece ceco ceec ceel cef- cefc cel- celc cele celf cell celo ceol ceor cer- cerc cere cerf cerl cero cexe cfcf cfcl cfco cffr cfor cfox cfre cfrx clec clee clef cleo cler cloe clof cloo clor clox clro clxx coce coco coel coex cofc cofe coff col- cole coll colo coof cool cor- corc core corf corl coro corr coxe crcc crce crcr cre- crec cree creo crex crfc crfl crlf croc croe crol croo cror cxro cxxx e-cl eccc ecce eccl ecco ecef ecfc ecfr eco- ecol ecrc ecrf ecrl ecrr eeee eefe eefl eele eeoc eerc eero efco efeo efor elce elco elec elee elef eleo eler elex elfc elfe elle ello elro eole eolo eore eorl er-x ercc erce erec erel erer erfc erfx erle erll eroc eroe erol eroo errc erre erro excl exco exec exel exer exfo exo- exor exrx fccf fece feel feer fefc fefe feff fefo fele felf fell felo feof ferc fere fero ferr ffcc ffee ffff ffrr flcl flee fler flex floc floe floo flor flox foce foco foer fofo folc fole foll folo folr folx foof fool for- fore forl foro forr foxe foxx frcc free freo frex frfc froe frol lccc lcce lcer lcfc lcfr lcor lcrl lece leco leef leel leer lefe leff lele lell lelo leoc leof leor leox lerc lere lero lexx lfcc llcc llef lllc llll lloc lloo locc loce loco lofe loff lole loll lolo looc looe loof lool loor lore loro lox- loxo lrfc lroc lrrc lrrr lxxx o-eo occc oce ocee ocef oclc ocre ocrl ocro ocrr oec- oecc oeec oele oere ofcl ofcr ofer off- offc offe offo offr ofor ofre olcc ole- olef oleo oler olfe olle ollo olof olor oocr ooer ooff oolo oooo oore orce orco ore- orec orel oreo orer orex orfe orff orle orlo oro- oroe orof oror orro oxer oxo- oxof oxox oxxo rccc rcfc rcle recc rece recr reef reel refe reff refl refr rele rell relo reof reol rere rero rexx rfef rffc rffl rlee rlef rocc roce roco roel roer rofc rofe roff rofl rofo role rolf roll rolo roof rool roor roox rorc rore roro roxo rrfc rrle rrrr xcel xeer xefe xer- xero xexe xfce xfer xloc xlox xoco xolo xoro xoxo xxxo xxxx