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74 8 74 9 75 0 75 1 75 2 75 3 75 4 75 5 75 6 75 7 75 8 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956

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