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16 20 16 21 16 22 16 23 16 24 16 25 16 26 16 27 16 28 16 29 16 30 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891

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