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75 40 75 41 75 42 75 43 75 44 75 45 75 46 75 47 75 48 75 49 75 50 7737 7736 7735 7734 7733 7732 7731 7730 7729 7728

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