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55 9 56 0 56 1 56 2 56 3 56 4 56 5 56 6 56 7 56 8 56 9 57 0 57 1 57 2 57 3 57 4 1624 1623 1622 1621 1620 1619 1618 1617 1616 1615 1614 1613 1612 1611 1610

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