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85 7 85 8 85 9 86 0 86 1 86 2 86 3 86 4 86 5 86 6 86 7 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961

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