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12 92 12 93 12 94 12 95 12 96 12 97 12 98 12 99 13 00 13 01 13 02 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997

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