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77 66 77 67 77 68 77 69 77 70 77 71 77 72 77 73 77 74 77 75 77 76 36462 36461 36460 36459 36458 36457 36456 36455 36454 36453

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