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36 89 36 90 36 91 36 92 36 93 36 94 36 95 36 96 36 97 36 98 36 99 37 00 37 01 37 02 37 03 37 04 37 05 37 06 37 07 37 08 37 09 37 10 37 11 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970

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