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53 36 53 37 53 38 53 39 53 40 53 41 53 42 53 43 53 44 53 45 53 46 9990 9989 9988 9987 9986 9985 9984 9983 9982 9981

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