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82 9 83 0 83 1 83 2 83 3 83 4 83 5 83 6 83 7 83 8 83 9 1931 1930 1929 1928 1927 1926 1925 1924 1923 1922

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