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89 6 89 7 89 8 89 9 90 0 90 1 90 2 90 3 90 4 90 5 90 6 90 7 90 8 90 9 91 0 91 1 1902 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891 1890 1889 1888

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