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47 7 47 8 47 9 48 0 48 1 48 2 48 3 48 4 48 5 48 6 48 7 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960

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