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18 06 18 07 18 08 18 09 18 10 18 11 18 12 18 13 18 14 18 15 18 16 18 17 18 18 18 19 18 20 18 21 18 22 18 23 18 24 18 25 18 26 18 27 18 28 1905 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895 1894 1893 1892 1891 1890 1889 1888 1887 1886 1885 1884

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