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90 6 90 7 90 8 90 9 91 0 91 1 91 2 91 3 91 4 91 5 91 6 91 7 91 8 91 9 92 0 92 1 1661 1660 1659 1658 1657 1656 1655 1654 1653 1652 1651 1650 1649 1648 1647

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