cccc cccl cccu cclc ccoc cctc cctl cctt ccuc ccut cloo clot clou cltc clut coco coct cocu col- coll colo colt colu cool coot cotc coto cott cotu coul cout ctol ctot cucc culc cull culo cult cut- cutc cuto cutt lccc lctl lcto llcc lllc llll lloc lloo locc loco locu loll lolo looc lool loot lotl loto lott loul lout louu ltcc lttc ltuc lull lulu occc occt oclc oct- octo ocul olcc ollo olot oltu oolo oooo otcl oto- otoo otto ottu oucc oulu out- outo ouu- tccc tccu tctc tcul tlco toco tol- toll tolo tolt tolu tool toot totc toto tott toul tout tttt ttul tucc tuco tull tulo tulu tutl tuto tutt tutu tuuo ucut ulcc ulco ullo ulo- uloc ulto ultt ulul uocc uolc utto uttu uulu uuoc uuuu