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21 77 21 78 21 79 21 80 21 81 21 82 21 83 21 84 21 85 21 86 21 87 11693 11692 11691 11690 11689 11688 11687 11686 11685 11684

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