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18 91 18 92 18 93 18 94 18 95 18 96 18 97 18 98 18 99 19 00 19 01 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895

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