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98 6 98 7 98 8 98 9 99 0 99 1 99 2 99 3 99 4 99 5 99 6 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917

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