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16 97 16 98 16 99 17 00 17 01 17 02 17 03 17 04 17 05 17 06 17 07 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999

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