code: def test_split_vietnamese_syllable(self):
      s = "cún"
      result = split_vietnamese_syllable(s)
      self.assertEqual("c", result[0])
  
imports: from unittest import TestCase
  from process_viwiktionary import Word, split_vietnamese_syllable
label_desc: Use image node_id 2 for calling the TestModel obj's underlying member method code with example usage: obj.test_split_vietnamese_syllable() without return types