cccc cccf cccl cccm cccu ccfc ccff ccfl cclc cclm ccmc ccmm ccrc ccrf ccrl ccuc cfcf cfcl cfcm cfcy cffr cfml cfmu cfry cfym clum cly- clym cmcc cmll cmmc cmml cmrr crcc crcr crfc crfl crlf crum cry- crym cucc cucm cufc cuff culc cull culm cum- curf curl curr cury cuy- cuyl cuyr cyc- cycc cycl cyl- cylc cyll cym- cyrl cyul cyy- cyyc fccf fcmr ffcc ffff ffrr flcl fluf flum flur fluy frcc frfc frum fuc- fucm fufc fuff fufu full fulu fumc fumy fur- furl furm furr fury fuyl fuyu fyry lccc lccm lcfc lcfr lcrl lfcc lfmr llcc lllc llll llyr lmcc lmfm lmmr lrfc lrmc lrrc lrrr lrry lucy luff lufu lull lulu lumc lury lyc- lyff lyfy lyly lymm lyyf mccc mccl mcfc mcfy mcmc mcml mcrc mfcc mlcc mlym mmcc mmcl mmcm mmff mmmc mmmm mmrc mmrf mmyy mr-c mrcc mrfc mrmc mrml mrrc muc- mucc mucu mufc muff mufu mull mulm mulu muly mumm mumu mumy murc murl murr muru mury myc- myl- myll mymy myrr myry rccc rcfc rcyc rffc rffl rlml rmll rrfc rrmc rrrr rrum rufc ruff rull ruly ruml rumm rumy rurc ruru ruyl ryff ryyf ucmc ucrc ufcu ulcc ullr ully ulmu ulul ulum umff urcy urff urry urum urur uulu uuuu yccc ymfc ymur yrly yuff yufu yulu yury yuyu yyff yyyy