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39 9 40 0 40 1 40 2 40 3 40 4 40 5 40 6 40 7 40 8 40 9 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935

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