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14 11 14 12 14 13 14 14 14 15 14 16 14 17 14 18 14 19 14 20 14 21 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961

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