c-- ccc cck ccm cco ccs ccu ckc ckm cko cks cmc cmk cmm cmo cms cmu co- coc cok com coo cos cou csc csk csm cso css csu cuc cuk cum cuo cus cuu kcc kck kcm kcs kcu kkc kkk kkm kks kku kmc kmk kmm kmo kms kmu koc kok kom koo kos kou ksc ksk ksm kso kss ksu kuc kuk kum kus kuu m-o mc- mcc mck mcm mco mcs mcu mkc mkk mkm mko mks mku mmc mmk mmm mmo mms mmu moc mok mom moo mos mou msc msk msm mso mss msu muc muk mum mus muu oc- occ ock ocm oco ocs ocu okc okk oko oks oku om- omc omm omo oms omu oo- ooc ook oom ooo oos os- osc osk osm oso oss osu ou- ouc ouk oum ouo ous scc sck scm sco scs scu sk- skc skk skm sko sks sku smc smk smm smo sms smu soc sok som soo sos sou ss- ssc ssk ssm sso sss ssu suc suk sum suo sus suu ucc uck ucm uco ucs ucu ukc ukk uku um- umc umm umo ums umu uoc uok uom uoo uos usc usk usm uso uss usu uuc uum uus uuu