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10 44 10 45 10 46 10 47 10 48 10 49 10 50 10 51 10 52 10 53 10 54 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959

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