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67 40 67 41 67 42 67 43 67 44 67 45 67 46 67 47 67 48 67 49 67 50 8639 8638 8637 8636 8635 8634 8633 8632 8631 8630

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