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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 7666 7665 7664 7663 7662 7661 7660 7659 7658 7657

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