code: def test_abbreviation_4(self):
      text = "một ở làng H'Lũ H'Mông"
      actual = tokenize(text, format="text")
      expected = "một ở làng H'Lũ H'Mông"
      self.assertEqual(expected, actual)
  
imports: from unittest import TestCase
  from underthesea.pipeline.word_tokenize.regex_tokenize import tokenize
label_desc: Use image node_id 14 for calling the TestTokenize obj's underlying member method code with example usage: obj.test_abbreviation_4() without return types