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18 4 18 5 18 6 18 7 18 8 18 9 19 0 19 1 19 2 19 3 19 4 1869 1868 1867 1866 1865 1864 1863 1862 1861 1860

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