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81 47 81 48 81 49 81 50 81 51 81 52 81 53 81 54 81 55 81 56 81 57 9732 9731 9730 9729 9728 9727 9726 9725 9724 9723

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