code: def insert_duplicate_characters(word):
      word_with_dupes = list(word)
      for _ in range(2):
          i = randrange(len(word_with_dupes))
          word_with_dupes.insert(i, word_with_dupes[i])
      return "".join(word_with_dupes)
  
file_path: artificial-adversary/Adversary/attacks.py
imports: from random import choice, randint, sample, randrange
  from string import punctuation
  from Adversary.constants import *
label_desc: Use image node_id 8 for calling a global function with example usage: insert_duplicate_characters(word) and returns: str