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12 63 12 64 12 65 12 66 12 67 12 68 12 69 12 70 12 71 12 72 12 73 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932

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