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12 77 12 78 12 79 12 80 12 81 12 82 12 83 12 84 12 85 12 86 12 87 1870 1869 1868 1867 1866 1865 1864 1863 1862 1861

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