7 6 6 6 6 6 5 5 5 5 5 5 5 4 4 4 4 4 4 3 3 3 4 3 3 3 3 3 3 3 3 3 3 4 2 2 2 2 2 2 1 1 2 2 2 1 1 1 2 2 2 3 2 2 2 1 1 1 1 1 1 1 1 1 1 1 1 2 2 1 7 8 4.5 2.5 4 3.5 2 2 2 1.5 1 1 0 1.5 3 2 2 1 . 1-2 1-2 2-3 2-3 2-3 2-3 2-3 2-3 2-3 3-4 4-5 4-5 5-6 5-6 5-6 6-7 3-4