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56 2 56 3 56 4 56 5 56 6 56 7 56 8 56 9 57 0 57 1 57 2 1871 1870 1869 1868 1867 1866 1865 1864 1863 1862

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