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77 38 77 39 77 40 77 41 77 42 77 43 77 44 77 45 77 46 77 47 77 48 7649 7648 7647 7646 7645 7644 7643 7642 7641 7640

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