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21 34 21 35 21 36 21 37 21 38 21 39 21 40 21 41 21 42 21 43 21 44 38874 38873 38872 38871 38870 38869 38868 38867 38866 38865

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