White Grid: 0, 0, 3, 3|3, 0, 6, 3|6, 0, 9, 3|9, 0, 12, 3|12, 0, 15, 3|15, 0, 18, 3|18, 0, 21, 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|42, 0, 45, 3|45, 0, 48, 3|15, 3, 18, 6|30, 3, 33, 6|3, 6, 6, 9|30, 6, 33, 9