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39 3 39 4 39 5 39 6 39 7 39 8 39 9 40 0 40 1 40 2 40 3 1647 1646 1645 1644 1643 1642 1641 1640 1639 1638

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