cccc cccf cccl cccu ccfc ccff ccfl cclc ccnc ccnf ccnr ccnu ccoc ccrc ccrf ccrl ccrt cctc cctl cctt ccuc ccut cfcf cfcl cfcn cfco cffr cfln cfnr cfor cfrn cfrt cftc cftl cftr cfun clof clon cloo clor clot clou clro cltc clun clut cnco cnrc cnrr cnrt cntc cntf cntr cnut coco coct cocu cofc coff coft col- coll coln colo colt colu con- conc conf conn cono cont coof cool coon coot cor- corc corf corl corn coro corr cort cotc cotn coto cott cotu coul coun cour cout crcc crcr crfc crfl crlf croc crol cron croo cror crot crrt crtc crtf crtl crun crut ctcf ctfc ctfo ctol ctor ctot ctrc ctrl ctrn cttn cucc cucn cufc cuff cufo culc cull culo cult cuno cunt cuon curf curl curn curo curr curt cut- cutc cuto cutt fccf fcnl fcot fcto ffcc ffff ffrr fftf ffun flcl flnc floc flon floo flor flot flou fluf fluo flur fnlc fnuf foco fofo folc foll folo folr folt fono font foof fool foon foot for- forl forn foro forr fort foto fott foul foun four fout frcc frcn frfc frol fron frot frou frun ft-c ft-l ftfc ftuc fuc- fuct fufc fuff fufu full fulu funf funt fuor fur- furl furn furo furr furt futo futu lccc lcfc lcfr lcor lcrl lctl lcto lfcc llcc lllc llll lloc lloo lncr lntc locc locn loco locu loff lofn loft loll lolo lono lonr lont looc loof lool loon loor loot lorn loro lotl loto lotr lott loul loun lour lout louu lrfc lroc lron lrrc lrrr ltcc ltfc ltnt lttc lttr ltuc luff luft lufu lull lulu lunn luno lunt lurt nccc nccf nccn nccr ncct nccu ncfc nclc ncln nclr ncnc ncoc ncor ncrc nctc nctr nfct nfcu nfff nfon nftc nfto nlcc nlcf nnnn nnot nntn nocl noco noct nolf noll nolo nolt non- nonn nono nont nonu noo- nool noon nooo noor noot nor- norc norf norn noro norr nort not- noto nott noul noun nour nout nrfc nroc nron nrrc nrrl nrtl ntcc ntfc ntfl ntnu ntof ntrc ntrl ntru ntto nttr ntuc nucu nuff null nunc nunn nuno nunt nuoc nuon nurc nurl nurn nurr nurt nuru nutt nutu occc occn occt oclc ocon ocrl ocro ocrr oct- octo ocul ocur ofcl ofcr off- offc offo offr offu ofno ofor olcc ollo olof olon olor olot oltu olur onc- oncf onco onct onlf onno onon onor ont- ontc onto onur onut oocr ooff oolo oont oooo oort orco orff orfu orlo orlu ornc orno oro- orof oron oror orot orro ortc orto otcl otfc oto- otof oton otoo otor otro otto ottu otur oucc oufc ouff oulu oun- our- ourn ouro ourt out- outo ouu- rccc rcfc rcnl rcnr rcon rctc rffc rffl rftc rnco rnnt rnot rnut rocc roco rofc roff rofl rofo rolf roll rolo rolt ronc rono ront roof rool roon roor root rorc roro rort roru rotc rotl rotn roto rotr rott rouf roul roun rout rrfc rrrr rrun rtcc rtfc rtlt ruct rufc ruff rufo ruft rull rulo runc runf runn runo runt rurc ruro ruru rutl ruto rutt rutu ruun tccc tccu tcfc tcnn tcon tctc tcul tfcu tfot tftc tlco tlon tncc tnfc tnfl tnut toco toff tofo toft tofu tol- toll tolo tolt tolu tonn tono tonu toof tool toon toor toot torc torf torn toro torr tort toru totc toto totr tott toul toun tour tout trcc trcl trfc trfr trno troc tron troo trot trou trtc trtr truc trun trut truu ttcn ttfc ttff ttfn tton tttt ttul tucc tuco tufc tuff tufo tuft tufu tull tulo tulu tunc tunn tuno tunu tuor turc turf turn turo turr turt turu tutl tuto tutt tutu tuuo ucon ucrc ucut ufcu ulcc ulco ulft ullo ullr ulno ulo- uloc ulto ultt ulul uncc uncf uncl unco unct unlf unno unon unrf unro unto unut uocc uofl uofo uolc uor- urff urft uro- urol uroo urun urur urut utfo utor utto uttu uulu uuno uuoc uutf uuuu