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97 8 97 9 98 0 98 1 98 2 98 3 98 4 98 5 98 6 98 7 98 8 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957

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