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41 6 41 7 41 8 41 9 42 0 42 1 42 2 42 3 42 4 42 5 42 6 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939

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