cccc cccf cccl ccfc ccff ccfl cclc ccnc ccnf ccnr ccoc ccrc ccrf ccrl cfcf cfcl cfcn cfco cffr cfln cfnr cfor cfrn clof clon cloo clor clro cnco cnrc cnrr coco cofc coff col- coll coln colo con- conc conf conn cono coof cool coon cor- corc corf corl corn coro corr crcc crcr crfc crfl crlf croc crol cron croo cror fccf fcnl ffcc ffff ffrr flcl flnc floc flon floo flor fnlc foco fofo folc foll folo folr fono foof fool foon for- forl forn foro forr frcc frcn frfc frol fron lccc lcfc lcfr lcor lcrl lfcc llcc lllc llll lloc lloo lncr locc locn loco loff lofn loll lolo lono lonr looc loof lool loon loor lorn loro lrfc lroc lron lrrc lrrr nccc nccf nccn nccr ncfc nclc ncln nclr ncnc ncoc ncor ncrc nfff nfon nlcc nlcf nnnn nocl noco nolf noll nolo non- nonn nono noo- nool noon nooo noor nor- norc norf norn noro norr nrfc nroc nron nrrc nrrl occc occn oclc ocon ocrl ocro ocrr ofcl ofcr off- offc offo offr ofno ofor olcc ollo olof olon olor onc- oncf onco onlf onno onon onor oocr ooff oolo oooo orco orff orlo ornc orno oro- orof oron oror orro rccc rcfc rcnl rcnr rcon rffc rffl rnco rocc roco rofc roff rofl rofo rolf roll rolo ronc rono roof rool roon roor rorc roro rrfc rrrr