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13 91 0 13 91 1 13 91 2 13 91 3 13 91 4 13 91 5 13 91 6 13 91 7 13 91 8 13 91 9 13 92 0 13 92 1 13 92 2 13 92 3 13 92 4 13 92 5 13 92 6 13 92 7 13 92 8 13 92 9 13 93 0 13 93 1 13 93 2 32000 31999 31998 31997 31996 31995 31994 31993 31992 31991 31990 31989 31988 31987 31986 31985 31984 31983 31982 31981 31980 31979

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