Grid: 502, 0, 504, 2|508, 0, 510, 2|500, 2, 502, 4|502, 2, 504, 4|508, 2, 510, 4|510, 2, 512, 4|498, 4, 500, 6|500, 4, 502, 6|504, 4, 506, 6|506, 4, 508, 6|508, 4, 510, 6|510, 4, 512, 6|498, 6, 500, 8|500, 6, 502, 8|502, 6, 504, 8|504, 6, 506, 8|506, 6, 508, 8|510, 6, 512, 8|498, 8, 500, 10|500, 8, 502, 10|504, 8, 506, 10|508, 8, 510, 10|500, 10, 502, 12|502, 10, 504, 12|502, 12, 504, 14|510, 12, 512, 14|504, 16, 506, 18|508, 16, 510, 18|502, 18, 504, 20|504, 18, 506, 20|502, 20, 504, 22|504, 20, 506, 22|500, 22, 502, 24|508, 22, 510, 24|502, 24, 504, 26|504, 24, 506, 26|498, 26, 500, 28|504, 26, 506, 28|498, 28, 500, 30|502, 28, 504, 30|504, 28, 506, 30|510, 28, 512, 30