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 3 3 3 4 4 5 4 4 3 3 3 3 2 2 2 2 2 3 3 3 4 4 6 4.5 4.5 2.5 4.5 0.5 1.5 1.5 . .