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29 7 29 8 29 9 30 0 30 1 30 2 30 3 30 4 30 5 30 6 30 7 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949

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