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17 47 17 48 17 49 17 50 17 51 17 52 17 53 17 54 17 55 17 56 17 57 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000

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