3 3 3 2 2 2 2 2 1 1 1 1 1 1 1 1 3 4.5 3 2 1.5 0 4 4 0-1 1-2 1-2 1-2 1-2 1-2 1-2 2-3 2-3 2-3 2-3 2-3 2-3 3-4