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83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 1941

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