6 6 5 5 4 4 4 4 4 4 4 4 4 5 4 4 3 4 3 3 2 2 2 2 3 3 3 3 3 3 3 3 2 2 2 2 2 2 3 3 3 2 2 1 1 1 1 1 2 1 1 1 2 2 2 2 2 3 5 1 1 1 3 1 2 4 1 3 3.5 6 4 5.5 6.5 4.5 6.5 1 3 2 2 1.5 3.5 . 1-2 1-2 1-2 1-2 2-3 2-3 2-3 2-3 3-4 3-4 3-4 2-3 3-4 4-5 4-5 4-5