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57 7 57 8 57 9 58 0 58 1 58 2 58 3 58 4 58 5 58 6 58 7 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920

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