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49 0 49 1 49 2 49 3 49 4 49 5 49 6 49 7 49 8 49 9 50 0 50 1 50 2 50 3 50 4 50 5 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928 1927 1926 1925 1924

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