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79 6 79 7 79 8 79 9 80 0 80 1 80 2 80 3 80 4 80 5 80 6 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937

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