Grid: 0, 0, 4, 4|4, 0, 8, 4|8, 0, 12, 4|12, 0, 16, 4|16, 0, 20, 4|20, 0, 24, 4|24, 0, 28, 4|28, 0, 32, 4|32, 0, 36, 4|36, 0, 40, 4|40, 0, 44, 4|44, 0, 48, 4|48, 0, 52, 4|52, 0, 56, 4|56, 0, 60, 4|60, 0, 64, 4|64, 0, 68, 4|68, 0, 72, 4|72, 0, 76, 4|76, 0, 80, 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|32, 4, 36, 8|36, 4, 40, 8|40, 4, 44, 8|44, 4, 48, 8|52, 4, 56, 8|56, 4, 60, 8|60, 4, 64, 8|64, 4, 68, 8|68, 4, 72, 8|72, 4, 76, 8|76, 4, 80, 8