code: def _particular(self):
      text = self.norm_text
      pattern = re.compile(r"(([a-zA-Z]+)二([a-zA-Z]+))")
      matchers = pattern.findall(text)
      if matchers:
          # print('particular')
          for matcher in matchers:
              text = text.replace(
                  matcher[0], matcher[1] + "2" + matcher[2], 1
              )
      self.norm_text = text
      return self.norm_text
  
imports: import argparse
  import codecs
  import os
  import re
  import string
  import sys
label_desc: Use image node_id 2 for calling the NSWNormalizer obj's underlying member method code with example usage: obj._particular() and returns: self