c-- ccc ccm cco ccu cmc cmm cmo cmu cmy co- coc com coo cou coy cuc cum cuo cuu cuy cyc cym cyo m-o mc- mcc mcm mco mcu mmc mmm mmo mmu moc mom moo mou moy muc mum muu muy my- myc mym myo myu oc- occ ocm oco ocu om- omc omm omo omu omy oo- ooc oom ooo ou- ouc oum ouo oyo ucc ucm uco ucu um- umc umm umo umu uoc uom uoo uuc uum uuu uyc uyo uyu ycc yco ycu ycy ymc ymm ymo yoc yom yoo you yoy yum yuo yuu yuy yyc yyu yyy