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61 48 1 61 48 2 61 48 3 61 48 4 61 48 5 61 48 6 61 48 7 61 48 8 61 48 9 61 49 0 61 49 1 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999

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