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18 32 18 33 18 34 18 35 18 36 18 37 18 38 18 39 18 40 18 41 18 42 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998

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