8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9 8 9
4 4 4 4 4 4 4 4 4 4 4 4 4 4 4 4
right rail right rail right rail right rail right rail