cccc cccl cclc ccoc cctc cctl cctt cloo clot cloy cltc cly- coco coct col- coll colo colt coly cool coot cotc coto cott coty coyl coyo coyt ctol ctot cyc- cycc cycl cyl- cylc cyll cyt- cyto cyy- cyyc lccc lctl lcto llcc lllc llll lloc lloo locc loco loll lolo loly looc lool loot lotl loto lott ltcc lttc lyc- lyco lyly lyo- lyot lyto lytt occc occt oclc oct- octo octy olcc ollo olly olot oolo oooo ooty otcl oto- otoo otoy otto oyly tccc tctc tlco to-y toco tol- toll tolo tolt toly tool toot totc toto tott toty toyl toyo toyt ttoy tttt ttyl tyco tyl- tyll tylo tyto tytt tyty yccc yctc yoll yolo yoly yool yoot yott yoyo yyyy