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77 01 77 02 77 03 77 04 77 05 77 06 77 07 77 08 77 09 77 10 77 11 7744 7743 7742 7741 7740 7739 7738 7737 7736 7735

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