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77 03 77 04 77 05 77 06 77 07 77 08 77 09 77 10 77 11 77 12 77 13 7692 7691 7690 7689 7688 7687 7686 7685 7684 7683

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