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