Grid: 0, 0, 4, 4|4, 0, 8, 4|16, 0, 20, 4|20, 0, 24, 4|28, 0, 32, 4|0, 4, 4, 8|4, 4, 8, 8|8, 4, 12, 8|12, 4, 16, 8|16, 4, 20, 8|20, 4, 24, 8|24, 4, 28, 8|28, 4, 32, 8|32, 4, 36, 8|36, 4, 40, 8|40, 4, 44, 8|0, 8, 4, 12|4, 8, 8, 12|8, 8, 12, 12|12, 8, 16, 12|16, 8, 20, 12|20, 8, 24, 12|24, 8, 28, 12|28, 8, 32, 12|36, 8, 40, 12|40, 8, 44, 12