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