cccc cccf cccl cccu ccfc ccff ccfl cclc ccoc ccrc ccrf ccrl ccuc cfcf cfcl cfco cffr cfor clof cloo clor clou clro coco cocu cofc coff col- coll colo colu coof cool cor- corc corf corl coro corr coul cour crcc crcr crfc crfl crlf croc crol croo cror cucc cufc cuff cufo culc cull culo curf curl curo curr fccf ffcc ffff ffrr flcl floc floo flor flou fluf fluo flur foco fofo folc foll folo folr foof fool for- forl foro forr foul four frcc frfc frol frou fuc- fufc fuff fufu full fulu fuor fur- furl furo furr lccc lcfc lcfr lcor lcrl lfcc llcc lllc llll lloc lloo locc loco locu loff loll lolo looc loof lool loor loro loul lour louu lrfc lroc lrrc lrrr luff lufu lull lulu occc oclc ocrl ocro ocrr ocul ocur ofcl ofcr off- offc offo offr offu ofor olcc ollo olof olor olur oocr ooff oolo oooo orco orff orfu orlo orlu oro- orof oror orro oucc oufc ouff oulu our- ouro ouu- rccc rcfc rffc rffl rocc roco rofc roff rofl rofo rolf roll rolo roof rool roor rorc roro roru rouf roul rrfc rrrr rufc ruff rufo rull rulo rurc ruro ruru ucrc ufcu ulcc ulco ullo ullr ulo- uloc ulul uocc uofl uofo uolc uor- urff uro- urol uroo urur uulu uuoc uuuu