c-- ccc cck ccm ccs ccu ckc ckm cks cky cmc cmk cmm cms cmu cmy csc csk csm css csu csy cuc cuk cum cus cuu cuy cyc cyk cym cys kcc kck kcm kcs kcu kkc kkk kkm kks kku kky kmc kmk kmm kms kmu ksc ksk ksm kss ksu kuc kuk kum kus kuu kuy kyc kym kys kyu mc- mcc mck mcm mcs mcu mkc mkk mkm mks mku mky mmc mmk mmm mms mmu msc msk msm mss msu msy muc muk mum mus muu muy my- myc myk mym mys myu scc sck scm scs scu sk- skc skk skm sks sku sky smc smk smm sms smu smy ss- ssc ssk ssm sss ssu suc suk sum sus suu suy sy- syc syk sym sys syu ucc uck ucm ucs ucu ukc ukk uku um- umc umm ums umu usc usk usm uss usu uuc uum uus uuu uyc uys uyu ycc ycs ycu ycy ykk ykm ymc ymm yms ysc ysk ysm yss ysu ysy yuk yum yus yuu yuy yyc yys yyu yyy