static MultiSet<S> collectSuffixesAfterTokenIC(Collection<S> l, S token) {
  new MultiSet<S> suffixes;
  for (S s : l) {
    L<S> tok = javaTok(s);
    int i = indexOfIC(tok, token);
    if (i < 0) continue;
    suffixes.add(joinSubList(tok, i+2));
  }
  ret suffixes;
}