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10 03 10 04 10 05 10 06 10 07 10 08 10 09 10 10 10 11 10 12 10 13 10 14 10 15 10 16 10 17 10 18 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993

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