7 6 5 5 4 4 4 3 3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 1 8 1 2.5 5 1 1 1.5 0 1 1 2 . 0-1 0-1 0-1 1-2 1-2 1-2 1-2 2-3 2-3 2-3 2-3 2-3 2-3 3-4 3-4