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53 4 53 5 53 6 53 7 53 8 53 9 54 0 54 1 54 2 54 3 54 4 2014 2013 2012 2011 2010 2009 2008 2007 2006 2005

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