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15 27 15 28 15 29 15 30 15 31 15 32 15 33 15 34 15 35 15 36 15 37 15 38 15 39 15 40 15 41 15 42 666 665 664 663 662 661 660 659 658 657 656 655 654 653 652

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