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// 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)) {
      Int score2 = find3_levenWithSwapsDistance(phrase, s);
      if (score2 == null) continue patLoop;
      score += score2;
    }
    min = min_withNull(min, score);
  }
  ret min;
}