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88 8 88 9 89 0 89 1 89 2 89 3 89 4 89 5 89 6 89 7 89 8 1636 1635 1634 1633 1632 1631 1630 1629 1628 1627

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