// patterns = e.g. "Zitat, Anfrage, Preis, Kosten, Preise, Geld, wieviel, wie + viel"
// potentially slow (not using levenLimited)
static Int mmo_levenWithSwapsScore(S patterns, S s) {
  Int min = null;
  if (startsWith(s, "#")) null;
  patLoop: for (S pat : tok_splitAtComma(patterns)) {
    if (startsWith(pat, "#")) continue; // ignore special commands
    int score = 0;
    for (S phrase : tok_splitAtPlus(pat)) {
      if (endsWith(phrase, "!")) {
        if (!find3(phrase, s)) continue patLoop;
      } else {
        Int score2 = find3_levenWithSwapsDistance(phrase, s);
        if (score2 == null) continue patLoop;
        score += score2;
      }
    }
    min = min_withNull(min, score);
  }
  ret min;
}