7 6 6 5 5 5 4 4 4 4 4 4 4 4 4 3 3 3 3 3 3 3 3 3 5 2 3 2 2 2 4 5 3 3 2 2 2 1 2 2 2 2 1 1 1 1 1 1 3 2 4.5 7.5 3 7 3.5 6 3 2 2 1 1 1 1 6 5 3 . 2-3 2-3 2-3 2-3 2-3 2-3 2-3 1-2 1-2 1-2 1-2 2-3 3-4 3-4 3-4 3-4 3-4 3-4 3-4 4-5 4-5 4-5 5-6