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12 72 12 73 12 74 12 75 12 76 12 77 12 78 12 79 12 80 12 81 12 82 12 83 12 84 12 85 12 86 12 87 630 629 628 627 626 625 624 623 622 621 620 619 618 617 616

= Free Coordinate    = Occupied(Single Region)     = Occupied (Var Region)     = Center of the grid