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12 76 12 77 12 78 12 79 12 80 12 81 12 82 12 83 12 84 12 85 12 86 12 87 12 88 12 89 12 90 12 91 539 538 537 536 535 534 533 532 531 530 529 528 527 526 525

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