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19 18 19 19 19 20 19 21 19 22 19 23 19 24 19 25 19 26 19 27 19 28 1912 1911 1910 1909 1908 1907 1906 1905 1904 1903

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