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