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37 67 37 68 37 69 37 70 37 71 37 72 37 73 37 74 37 75 37 76 37 77 37900 37899 37898 37897 37896 37895 37894 37893 37892 37891

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