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70 3 70 4 70 5 70 6 70 7 70 8 70 9 71 0 71 1 71 2 71 3 1890 1889 1888 1887 1886 1885 1884 1883 1882 1881

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