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21 5 21 6 21 7 21 8 21 9 22 0 22 1 22 2 22 3 22 4 22 5 1874 1873 1872 1871 1870 1869 1868 1867 1866 1865

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