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42 7 42 8 42 9 43 0 43 1 43 2 43 3 43 4 43 5 43 6 43 7 43 8 43 9 44 0 44 1 44 2 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958

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