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37 18 37 19 37 20 37 21 37 22 37 23 37 24 37 25 37 26 37 27 37 28 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996

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