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19 20 19 21 19 22 19 23 19 24 19 25 19 26 19 27 19 28 19 29 19 30 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887

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