docs: def main():
      """Main method for running upsidedown.py from the command line."""
      import sys
  
      output = []
      line = sys.stdin.readline()
  
      while line:
          line = line.strip("\n")
          output.append(transform(line))
  
          line = sys.stdin.readline()
      output.reverse()
      print("\n".join(output))