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66 9 67 0 67 1 67 2 67 3 67 4 67 5 67 6 67 7 67 8 67 9 68 0 68 1 68 2 68 3 68 4 1949 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935

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