cccc cccf cccl cccu ccfc ccff ccfl cclc ccoc ccrc ccrf ccrl ccrt cctc cctl cctt ccuc ccut cfcf cfcl cfco cffr cfor cfrt cftc cftl cftr clof cloo clor clot clou clro cltc clut coco coct cocu cofc coff coft col- coll colo colt colu coof cool coot cor- corc corf corl coro corr cort cotc coto cott cotu coul cour cout crcc crcr crfc crfl crlf croc crol croo cror crot crrt crtc crtf crtl crut ctcf ctfc ctfo ctol ctor ctot ctrc ctrl cucc cufc cuff cufo culc cull culo cult curf curl curo curr curt cut- cutc cuto cutt fccf fcot fcto ffcc ffff ffrr fftf flcl floc floo flor flot flou fluf fluo flur foco fofo folc foll folo folr folt foof fool foot for- forl foro forr fort foto fott foul four fout frcc frfc frol frot frou ft-c ft-l ftfc ftuc fuc- fuct fufc fuff fufu full fulu fuor fur- furl furo furr furt futo futu lccc lcfc lcfr lcor lcrl lctl lcto lfcc llcc lllc llll lloc lloo locc loco locu loff loft loll lolo looc loof lool loor loot loro lotl loto lotr lott loul lour lout louu lrfc lroc lrrc lrrr ltcc ltfc lttc lttr ltuc luff luft lufu lull lulu lurt occc occt oclc ocrl ocro ocrr oct- octo ocul ocur ofcl ofcr off- offc offo offr offu ofor olcc ollo olof olor olot oltu olur oocr ooff oolo oooo oort orco orff orfu orlo orlu oro- orof oror orot orro ortc orto otcl otfc oto- otof otoo otor otro otto ottu otur oucc oufc ouff oulu our- ouro ourt out- outo ouu- rccc rcfc rctc rffc rffl rftc rocc roco rofc roff rofl rofo rolf roll rolo rolt roof rool roor root rorc roro rort roru rotc rotl roto rotr rott rouf roul rout rrfc rrrr rtcc rtfc rtlt ruct rufc ruff rufo ruft rull rulo rurc ruro ruru rutl ruto rutt rutu tccc tccu tcfc tctc tcul tfcu tfot tftc tlco toco toff tofo toft tofu tol- toll tolo tolt tolu toof tool toor toot torc torf toro torr tort toru totc toto totr tott toul tour tout trcc trcl trfc trfr troc troo trot trou trtc trtr truc trut truu ttfc ttff tttt ttul tucc tuco tufc tuff tufo tuft tufu tull tulo tulu tuor turc turf turo turr turt turu tutl tuto tutt tutu tuuo ucrc ucut ufcu ulcc ulco ulft ullo ullr ulo- uloc ulto ultt ulul uocc uofl uofo uolc uor- urff urft uro- urol uroo urur urut utfo utor utto uttu uulu uuoc uutf uuuu