cccc cccf cccm cccu ccfc ccff ccmc ccmm ccoc ccom ccrc ccrf ccuc cfcf cfcm cfco cffr cfmo cfmu cfom cfor cmcc cmmc cmoc cmrr coco cocu cofc coff com- comc comm como comr comu coof coom cor- corc corf corm coro corr cour crcc crcr crfc crmo croc crom croo cror crum cucc cucm cufc cuff cufo cum- curf curo curr fccf fcmr ffcc ffff ffrr foco fofo fomc fomo foof foom for- form foro forr four frcc frfc from frou frum fuc- fucm fufc fuff fufu fumc fumo fuor fur- furm furo furr mccc mcfc mcmc mcrc mfcc mfor mfou mmcc mmcm mmff mmmc mmmm mmor mmrc mmrf moco moff mofo mofu momo momu mooc moor morf moro moru mouf mour mr-c mrcc mrfc mrmc mrrc muc- mucc mucu mufc muff mufu mumm mumo mumu murc muro murr muru occc ocom ocro ocrr ocum ocur ofcr off- offc offo offr offu ofor omo- omoo omor omro omuo oocr ooff oooo orco orff orfu ormo oro- orof orom oror orro orum oucc oufc ouff our- ouro ouu- rccc rcfc rffc rocc roco rofc roff rofo romm romo roof room roor rorc roro roru rouf roum rrfc rrmc rrrr rrum rufc ruff rufo rumm rumo rurc ruro ruru ucmc ucom ucrc ufcu umff ummo umor uocc uofm uofo uomo uor- urff uro- urom uroo urum urur uuoc uuuu