static LS ai_dropFillers_advanced_once(S s) {
  LS phrases = mL("Fillers");
  LS tokOriginal = javaTokNPunctuation_cached(s);
  LS tokS = cloneList(tokOriginal);
  int n = l(tokS);
  LL<S> tokPhrases = map javaTokNPunctuation_cached(phrases);
  LL<S> tokNonFillers = map javaTokNPunctuation_cached(mL("Not fillers"));
  
  // Mark non-fillers with stars
  for (int i = 1; i < n; i += 2)
    for (LS tokPhrase : tokNonFillers)
      if (codeTokenSubListEqualsIC(tokS, tokPhrase, i))
        for (int j = i; j < i+l(tokPhrase)-1; j += 2)
          tokS.set(j, "*");
          
  new LS out;
  for (int i = 1; i < n; i += 2)
    for (LS tokPhrase : tokPhrases)
      if (codeTokenSubListEqualsIC(tokS, tokPhrase, i))
        out.add(trimJoin(ai_dropTokens(tokOriginal, i, i+l(tokPhrase)-1)));
  ret out;
}

Began life as a copy of #1022230