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30 2 30 3 30 4 30 5 30 6 30 7 30 8 30 9 31 0 31 1 31 2 31 3 31 4 31 5 31 6 31 7 57678 57677 57676 57675 57674 57673 57672 57671 57670 57669 57668 57667 57666 57665 57664

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