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42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 1787 1786 1785 1784 1783 1782 1781 1780 1779 1778 1777 1776 1775 1774 1773

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