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40 0 40 1 40 2 40 3 40 4 40 5 40 6 40 7 40 8 40 9 41 0 1169 1168 1167 1166 1165 1164 1163 1162 1161 1160

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