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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 7714 7713 7712 7711 7710 7709 7708 7707 7706 7705

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