Alex doesn’t mind what socks he puts on in the morning. He has a pair of red socks and a pair of blue socks. Each morning he just takes out the first two socks he finds. So some mornings he wears a pair of red socks and some mornings he wears a pair of blue socks. But some mornings he wears a ‘silly pair’ consisting of one red and one blue sock.
- red, red
- red, blue
- red, green
- blue, blue
- blue, green
- green, green