A 6-sided green die has two sides labelled with a 1, two sides labelled with a 2, and two sides labelled with a 3. A red die also has 6 sides. Each side of the red die is labelled with one of the numbers 1, 2, 3, 4, 5, and 6, with each number used only once. The sample space when rolling each of these dice once would not include rolling a