0 red 30 30 0 0 1 1 green 20 20 1 1 1 1 red 30 30 0 2 1 1 green 20 30 1 3 1 1 red 30 30 2 0 1 1 green 30 20 3 1 1 1 red 30 30 2 2 1 1 green 30 30 3 3 1 1