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18 36 18 37 18 38 18 39 18 40 18 41 18 42 18 43 18 44 18 45 18 46 1890 1889 1888 1887 1886 1885 1884 1883 1882 1881

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