cccc cccl cccu cclc ccoc ccrc ccrl ccrt cctc cctl cctt ccuc ccut cloo clor clot clou clro cltc clut coco coct cocu col- coll colo colt colu cool coot cor- corc corl coro corr cort cotc coto cott cotu coul cour cout crcc crcr croc crol croo cror crot crrt crtc crtl crut ctol ctor ctot ctrc ctrl cucc culc cull culo cult curl curo curr curt cut- cutc cuto cutt lccc lcor lcrl lctl lcto llcc lllc llll lloc lloo locc loco locu loll lolo looc lool loor loot loro lotl loto lotr lott loul lour lout louu lroc lrrc lrrr ltcc lttc lttr ltuc lull lulu lurt occc occt oclc ocrl ocro ocrr oct- octo ocul ocur olcc ollo olor olot oltu olur oocr oolo oooo oort orco orlo orlu oro- oror orot orro ortc orto otcl oto- otoo otor otro otto ottu otur oucc oulu our- ouro ourt out- outo ouu- rccc rctc rocc roco roll rolo rolt rool roor root rorc roro rort roru rotc rotl roto rotr rott roul rout rrrr rtcc rtlt ruct rull rulo rurc ruro ruru rutl ruto rutt rutu tccc tccu tctc tcul tlco toco tol- toll tolo tolt tolu tool toor toot torc toro torr tort toru totc toto totr tott toul tour tout trcc trcl troc troo trot trou trtc trtr truc trut truu tttt ttul tucc tuco tull tulo tulu tuor turc turo turr turt turu tutl tuto tutt tutu tuuo ucrc ucut ulcc ulco ullo ullr ulo- uloc ulto ultt ulul uocc uolc uor- uro- urol uroo urur urut utor utto uttu uulu uuoc uuuu