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12 95 12 96 12 97 12 98 12 99 13 00 13 01 13 02 13 03 13 04 13 05 13 06 13 07 13 08 13 09 13 10 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980

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