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86 0 86 1 86 2 86 3 86 4 86 5 86 6 86 7 86 8 86 9 87 0 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936

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