4 4 4 5 5 3 3 3 3 3 3 3 3 3 2 2 1 1 2 2 2 2 1 1 3 4 4 3 2 1 2 4 5 5 6 6 7 8 4 3 3 2 2 2 3 1.5 2.5 6 3.5 3.5 4 4.5 9 2 4.5 3 2 .