cccc cccl cccu cclc ccoc cctc cctl cctt ccuc ccut cloo clot clou cloz cltc clut coco coct cocu col- coll colo colt colu cool coot cotc coto cott cotu coul cout cozz ctol ctot cucc culc cull culo cult cut- cutc cuto cutt cuzo lccc lctl lcto llcc lllc llll lloc lloo locc loco locu loll lolo lolz looc lool loot looz lotl loto lott lotz loul lout louu ltcc lttc ltuc lull lulu lulz lutz lztt occc occt oclc oct- octo ocul olcc ollo olot oltu oolo oooo otcl oto- otoo otto ottu oucc oulu out- outo ouu- ouzo ozlu tccc tccu tctc tcul tlco toco tol- toll tolo tolt tolu tool toot totc toto tott toul tout tozo tttt ttul tucc tuco tull tulo tulu tutl tuto tutt tutu tuuo tuzu tuzz tzut tzzt ucoz ucut ulcc ulco ullo ulo- uloc ulto ultt ultz ulul uocc uolc utto uttu uulu uuoc uuuu zctu zloc zlot zoco zoll zolo zoo- zool zoot zott zotz zouc zozo zozu zull zulu zulz zuoz zuul zuzu zzzz