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86 5 86 6 86 7 86 8 86 9 87 0 87 1 87 2 87 3 87 4 87 5 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892

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