7 8 6 5 4 4 3 3 3 3 5 4 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 2 1 1 1 1 1 1 1 1 1 2 1 1 1 2 1 1 1 1 1 1 1 1 1 1 8.5 5.5 3.5 1 0.5 2.5 4 0 1.5 1 2 1 0 . 1-1.5 0-1 0-1 0-1 1-2 1-2 1-2 1-2 1-2 1-2 1-2 2-3 2-3 2-3 2-3 2-3 2-3 2-3 3-4 3-4 3-4