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70 8 70 9 71 0 71 1 71 2 71 3 71 4 71 5 71 6 71 7 71 8 1870 1869 1868 1867 1866 1865 1864 1863 1862 1861

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