code: def fix_microsoft (foo):
      
      i = 0
      bar = []
  
      while i < len(foo):
          text, lemma, pos, tag = foo[i]
  
          if (text == "#") and (i > 0):
              prev_tok = bar[-1]
  
              prev_tok[0] += "#"
              prev_tok[1] += "#"
  
              bar[-1] = prev_tok
          else:
              bar.append(foo[i])
  
          i += 1
  
      return bar
docs: fix special case for `c#`, `f#`, etc.; thanks Microsoft