c-- ccc cck ccm cco ccu ckc ckm cko cmc cmk cmm cmo cmu co- coc cok com coo cou cuc cuk cum cuo cuu kcc kck kcm kcu kkc kkk kkm kku kmc kmk kmm kmo kmu koc kok kom koo kou kuc kuk kum kuu m-o mc- mcc mck mcm mco mcu mkc mkk mkm mko mku mmc mmk mmm mmo mmu moc mok mom moo mou muc muk mum muu oc- occ ock ocm oco ocu okc okk oko oku om- omc omm omo omu oo- ooc ook oom ooo ou- ouc ouk oum ouo ucc uck ucm uco ucu ukc ukk uku um- umc umm umo umu uoc uok uom uoo uuc uum uuu