-ol c-- ccc cck ccl ccm cco ccx ckc ckm cko ckx cl- clc clk cll clm clo clx cmc cmk cml cmm cmo cmx co- coc cok col com coo cox cxc cxk cxl cxo cxx kcc kck kcl kcm kcx kkc kkk kkl kkm kl- klc klm klo klx kmc kmk kml kmm kmo koc kok kol kom koo kxl kxm kxo lcc lck lcl lcm lco lcx lkl llc llk lll llm llo lmc lmk lml lmm lmo loc lok lol lom loo lox lxc lxo lxx m-o mc- mcc mck mcl mcm mco mcx mkc mkk mkl mkm mko mkx mlc mlk mll mlm mlo mlx mmc mmk mml mmm mmo mmx moc mok mol mom moo mox mxc mxl oc- occ ock ocl ocm oco ocx okc okk okl oko olc olk oll olm olo om- omc oml omm omo omx oo- ooc ook ool oom ooo oox ox- oxc oxo oxx xcl xcx xkl xlm xmc xmk xml xmm xmo xmx xoc xok xom xoo xox xxl xxo xxx