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