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13 28 13 29 13 30 13 31 13 32 13 33 13 34 13 35 13 36 13 37 13 38 13 39 13 40 13 41 13 42 13 43 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992

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