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82 9 83 0 83 1 83 2 83 3 83 4 83 5 83 6 83 7 83 8 83 9 1683 1682 1681 1680 1679 1678 1677 1676 1675 1674

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