c-- ccc cck ccl ccm ccu ckc ckm cl- clc clk cll clm clu cmc cmk cml cmm cmu cuc cuk cul cum cuu kcc kck kcl kcm kcu kkc kkk kkl kkm kku kl- klc klm klu kmc kmk kml kmm kmu kuc kuk kul kum kuu lcc lck lcl lcm lcu lkl llc llk lll llm llu lmc lmk lml lmm lmu luc luk lul lum luu mc- mcc mck mcl mcm mcu mkc mkk mkl mkm mku mlc mlk mll mlm mlu mmc mmk mml mmm mmu muc muk mul mum muu ucc uck ucl ucm ucu ukc ukk ukl uku ulc ulk ull ulm ulu um- umc uml umm umu uuc uum uuu