code: def extract_sino():
      with open("tmp/sino_vietnamese_v1_2022.csv") as f:
          lines = f.read().splitlines()[1:]
      syllables = set()
      ignore_syllables = ["tê (tây)", "uái (khoá"]
      for line in lines:
          items = line.split(",")
          syllable = items[1].lower()
          syllables.add(syllable)
          if syllable not in ignore_syllables:
              syllables.add(syllable)
      syllables = sorted(list(syllables))
      content = "\n".join(syllables)
      with open("tmp/sino_vietnamese_syllables_v1_2022.txt", "w") as f:
          f.write(content)
  
label_desc: Use image node_id 1 for calling a global function with example usage: extract_sino() without return types