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12 99 13 00 13 01 13 02 13 03 13 04 13 05 13 06 13 07 13 08 13 09 1871 1870 1869 1868 1867 1866 1865 1864 1863 1862

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