1 1 1 1 1 1 2 2 2 2 2 2 2 2 2 2 2 2 3 3 3 3 3 4 3 4 4 3 3 2 3 . 3.5 3.5 3.5 2.5 4.5 4.5 4.5 4 2 3.5