Black-Black Black-White Black-Blue Black-Purple Black-Yellow Black-Grey White-Black White-White White-Blue White-Purple White-Yellow White-Grey Blue-Black Blue-White Blue-Blue Blue-Purple Blue-Yellow Blue-Grey Purple-Black Purple-White Purple-Blue Purple-Purple Purple-Yellow Purple-Grey Yellow-Black Yellow-White Yellow-Blue Yellow-Purple Yellow-Yellow Yellow-Grey Grey-Black Grey-White Grey-Blue Grey-Purple Grey-Yellow Grey-Grey