. 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 3 3 3 4 4 5 5 5 6 6 7 7 3 8 8 3.5 3 2.5 2.5 2 0.5 2 2 1.5 1.5 1.5 . . .