cccc cccl cccu cclc ccnc ccnr ccnu ccoc ccrc ccrl ccrt cctc cctl cctt ccuc ccut clon cloo clor clot clou clro cltc clun clut cnco cnrc cnrr cnrt cntc cntr cnut coco coct cocu col- coll coln colo colt colu con- conc conn cono cont cool coon coot cor- corc corl corn coro corr cort cotc cotn coto cott cotu coul coun cour cout crcc crcr croc crol cron croo cror crot crrt crtc crtl crun crut ctol ctor ctot ctrc ctrl ctrn cttn cucc cucn culc cull culo cult cuno cunt cuon curl curn curo curr curt cut- cutc cuto cutt lccc lcor lcrl lctl lcto llcc lllc llll lloc lloo lncr lntc locc locn loco locu loll lolo lono lonr lont looc lool loon loor loot lorn loro lotl loto lotr lott loul loun lour lout louu lroc lron lrrc lrrr ltcc ltnt lttc lttr ltuc lull lulu lunn luno lunt lurt nccc nccn nccr ncct nccu nclc ncln nclr ncnc ncoc ncor ncrc nctc nctr nlcc nnnn nnot nntn nocl noco noct noll nolo nolt non- nonn nono nont nonu noo- nool noon nooo noor noot nor- norc norn noro norr nort not- noto nott noul noun nour nout nroc nron nrrc nrrl nrtl ntcc ntnu ntrc ntrl ntru ntto nttr ntuc nucu 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 olcc ollo olon olor olot oltu olur onc- onco onct onno onon onor ont- ontc onto onur onut oocr oolo oont oooo oort orco orlo orlu ornc orno oro- oron oror orot orro ortc orto otcl oto- oton otoo otor otro otto ottu otur oucc oulu oun- our- ourn ouro ourt out- outo ouu- rccc rcnl rcnr rcon rctc rnco rnnt rnot rnut rocc roco roll rolo rolt ronc rono ront rool roon roor root rorc roro rort roru rotc rotl rotn roto rotr rott roul roun rout rrrr rrun rtcc rtlt ruct rull rulo runc runn runo runt rurc ruro ruru rutl ruto rutt rutu ruun tccc tccu tcnn tcon tctc tcul tlco tlon tncc tnut toco tol- toll tolo tolt tolu tonn tono tonu tool toon toor toot torc torn toro torr tort toru totc toto totr tott toul toun tour tout trcc trcl trno troc tron troo trot trou trtc trtr truc trun trut truu ttcn tton tttt ttul tucc tuco tull tulo tulu tunc tunn tuno tunu tuor turc turn turo turr turt turu tutl tuto tutt tutu tuuo ucon ucrc ucut ulcc ulco ullo ullr ulno ulo- uloc ulto ultt ulul uncc uncl unco unct unno unon unro unto unut uocc uolc uor- uro- urol uroo urun urur urut utor utto uttu uulu uuno uuoc uuuu