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79 8 79 9 80 0 80 1 80 2 80 3 80 4 80 5 80 6 80 7 80 8 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887

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