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89 5 89 6 89 7 89 8 89 9 90 0 90 1 90 2 90 3 90 4 90 5 1888 1887 1886 1885 1884 1883 1882 1881 1880 1879

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