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12 72 12 73 12 74 12 75 12 76 12 77 12 78 12 79 12 80 12 81 12 82 12 83 12 84 12 85 12 86 12 87 548 547 546 545 544 543 542 541 540 539 538 537 536 535 534

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