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