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12 81 12 82 12 83 12 84 12 85 12 86 12 87 12 88 12 89 12 90 12 91 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892

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