White Grid: 0, 0, 3, 3|6, 0, 9, 3|9, 0, 12, 3|12, 0, 15, 3|15, 0, 18, 3|21, 0, 24, 3|24, 0, 27, 3|27, 0, 30, 3|30, 0, 33, 3|33, 0, 36, 3|36, 0, 39, 3|39, 0, 42, 3|42, 0, 45, 3|6, 3, 9, 6|12, 3, 15, 6|24, 3, 27, 6|27, 3, 30, 6|30, 3, 33, 6|36, 3, 39, 6|3, 6, 6, 9|24, 6, 27, 9|33, 6, 36, 9|6, 9, 9, 12|33, 9, 36, 12