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12 02 12 03 12 04 12 05 12 06 12 07 12 08 12 09 12 10 12 11 12 12 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937

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