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