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97 7 97 8 97 9 98 0 98 1 98 2 98 3 98 4 98 5 98 6 98 7 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960

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