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88 68 88 69 88 70 88 71 88 72 88 73 88 74 88 75 88 76 88 77 88 78 6576 6575 6574 6573 6572 6571 6570 6569 6568 6567

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