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14 71 14 72 14 73 14 74 14 75 14 76 14 77 14 78 14 79 14 80 14 81 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990

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