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88 7 88 8 88 9 89 0 89 1 89 2 89 3 89 4 89 5 89 6 89 7 2641 2640 2639 2638 2637 2636 2635 2634 2633 2632

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