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