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77 40 77 41 77 42 77 43 77 44 77 45 77 46 77 47 77 48 77 49 77 50 36463 36462 36461 36460 36459 36458 36457 36456 36455 36454

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