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36 8 36 9 37 0 37 1 37 2 37 3 37 4 37 5 37 6 37 7 37 8 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001

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