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53 5 53 6 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 1660 1659 1658 1657 1656 1655 1654 1653 1652 1651 1650 1649 1648 1647 1646

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