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18 79 8 18 79 9 18 80 0 18 80 1 18 80 2 18 80 3 18 80 4 18 80 5 18 80 6 18 80 7 18 80 8 50006 50005 50004 50003 50002 50001 50000 49999 49998 49997

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