static <A> S levenClosestIC(Map<S, A> map, S s) {
  ret levenClosestIC(keys(map), s);
}

sS levenClosestIC(Collection<S> l, S s) {
  ret levenClosestIC(l, s, Int.MAX_VALUE-2);
}

sS levenClosestIC(Collection<S> l, S s, int limit) {
  ++limit;
  new Lowest<S> best;
  for (S key : unnull(l)) {
    limit = leven_limitedIC(s, key, limit);
    best.put(key, limit);
    if (limit == 0) break;
  }
  ret best!;
}

static <A> S levenClosestIC(S s, Map<S, A> map) {
  ret levenClosestIC(map, s);
}

sS levenClosestIC(S s, Collection<S> l) {
  ret levenClosestIC(l, s);
}