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56 7 56 8 56 9 57 0 57 1 57 2 57 3 57 4 57 5 57 6 57 7 57 8 57 9 58 0 58 1 58 2 1870 1869 1868 1867 1866 1865 1864 1863 1862 1861 1860 1859 1858 1857 1856

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