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17 61 17 62 17 63 17 64 17 65 17 66 17 67 17 68 17 69 17 70 17 71 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998

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