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15 85 15 86 15 87 15 88 15 89 15 90 15 91 15 92 15 93 15 94 15 95 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000

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