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91 8 91 9 92 0 92 1 92 2 92 3 92 4 92 5 92 6 92 7 92 8 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950

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