static S lispToEnglish_prettier(Lisp l) {
  if (l == null) ret "";
  S pattern = conceptToNameOpt(lispForwardRawOrSame("omrvwjslbkffaxoj", l.head));
  if (empty(pattern)) ret clUnparse(l);
  L<S> args = map(f lispToEnglish_prettier, l.args);
  S s = formatXYZ_appendRest(pattern, args);
  ret s;
}