3 3 3 3 2 2 2 2 2 2 2 2 2 2 2 1 2 1 2 1 1.5 2 3 1.5 1 1 4 3.5 2.5 1 1-2 1-2 1-2 1-2 2-3 2-3 2-3 2-3