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12 24 12 25 12 26 12 27 12 28 12 29 12 30 12 31 12 32 12 33 12 34 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956

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