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12 45 12 46 12 47 12 48 12 49 12 50 12 51 12 52 12 53 12 54 12 55 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930

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