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66 8 66 9 67 0 67 1 67 2 67 3 67 4 67 5 67 6 67 7 67 8 1870 1869 1868 1867 1866 1865 1864 1863 1862 1861

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