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12 27 12 28 12 29 12 30 12 31 12 32 12 33 12 34 12 35 12 36 12 37 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891

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