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53 7 53 8 53 9 54 0 54 1 54 2 54 3 54 4 54 5 54 6 54 7 54 8 54 9 55 0 55 1 55 2 1705 1704 1703 1702 1701 1700 1699 1698 1697 1696 1695 1694 1693 1692 1691

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