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11 96 11 97 11 98 11 99 12 00 12 01 12 02 12 03 12 04 12 05 12 06 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979

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