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13 68 13 69 13 70 13 71 13 72 13 73 13 74 13 75 13 76 13 77 13 78 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930

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