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12 17 12 18 12 19 12 20 12 21 12 22 12 23 12 24 12 25 12 26 12 27 1892 1891 1890 1889 1888 1887 1886 1885 1884 1883

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