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77 35 77 36 77 37 77 38 77 39 77 40 77 41 77 42 77 43 77 44 77 45 7644 7643 7642 7641 7640 7639 7638 7637 7636 7635

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