cccc cccf cccl ccfc ccff ccfl cclc ccoc ccrc ccrf ccrl cfcf cfcl cfco cffr cfor clof cloo clor clro coco cofc coff col- coll colo coof cool cor- corc corf corl coro corr crcc crcr crfc crfl crlf croc crol croo cror fccf ffcc ffff ffrr flcl floc floo flor foco fofo folc foll folo folr foof fool for- forl foro forr frcc frfc frol lccc lcfc lcfr lcor lcrl lfcc llcc lllc llll lloc lloo locc loco loff loll lolo looc loof lool loor loro lrfc lroc lrrc lrrr occc oclc ocrl ocro ocrr ofcl ofcr off- offc offo offr ofor olcc ollo olof olor oocr ooff oolo oooo orco orff orlo oro- orof oror orro rccc rcfc rffc rffl rocc roco rofc roff rofl rofo rolf roll rolo roof rool roor rorc roro rrfc rrrr