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19 6 19 7 19 8 19 9 20 0 20 1 20 2 20 3 20 4 20 5 20 6 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891

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