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17 83 17 84 17 85 17 86 17 87 17 88 17 89 17 90 17 91 17 92 17 93 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961

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