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40 6 40 7 40 8 40 9 41 0 41 1 41 2 41 3 41 4 41 5 41 6 41 7 41 8 41 9 42 0 42 1 1887 1886 1885 1884 1883 1882 1881 1880 1879 1878 1877 1876 1875 1874 1873

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