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45 3 45 4 45 5 45 6 45 7 45 8 45 9 46 0 46 1 46 2 46 3 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962

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