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