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71 0 71 1 71 2 71 3 71 4 71 5 71 6 71 7 71 8 71 9 72 0 1166 1165 1164 1163 1162 1161 1160 1159 1158 1157

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