6 5 4 3 3 4 3 2 1 1 2 2 2 2 2 2 2 3 3 4.5 8 1 2 1 1 1 1.5 2 2 3 4 3.5 1 0.5 0.5 0.5 . 2.5-3 2.5-3 2.5-3 2-2.5 2-2.5 1-1.5