Grid: 0, 0, 2, 2|2, 0, 4, 2|4, 0, 6, 2|6, 0, 8, 2|8, 0, 10, 2|0, 2, 2, 4|8, 2, 10, 4|0, 4, 2, 6|8, 4, 10, 6|0, 6, 2, 8|8, 6, 10, 8|0, 8, 2, 10|8, 8, 10, 10|0, 10, 2, 12|8, 10, 10, 12|0, 12, 2, 14|8, 12, 10, 14|0, 14, 2, 16|8, 14, 10, 16|0, 16, 2, 18|8, 16, 10, 18