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36 4 36 5 36 6 36 7 36 8 36 9 37 0 37 1 37 2 37 3 37 4 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976

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