2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 3 3 3 3 4 4 4 4 5 5 5 5 5 6 6 6 1 1 1 2 1 1 1 1 1 1 2 1 2 2-3 2-3 2-3 2-3 2-3 2-3 2-3 2-3 1-2 1-2 1-2 1-2 1-2 1-2 1-2 4-5 0.5 0.5 0.5 2 5.5 6 7 1 1 3 2.5