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56 67 56 68 56 69 56 70 56 71 56 72 56 73 56 74 56 75 56 76 56 77 58500 58499 58498 58497 58496 58495 58494 58493 58492 58491

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