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18 7 18 8 18 9 19 0 19 1 19 2 19 3 19 4 19 5 19 6 19 7 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887

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