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13 80 13 81 13 82 13 83 13 84 13 85 13 86 13 87 13 88 13 89 13 90 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936

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