Thank you for the clarification.  I suspected the &quot;by&quot; portion might be key, mainly because it felt like it was missing (and thus a requirement).  That it helps distinguish the meaning makes sense.<p>I really should spend some time to research the mechanics of my native tongue, rather than rely on what sounds right and the simplistic rules I can remember from primary school.  This has been on my mental to-do list at different times over the years, but I always seem to have it de-prioritized and then I forget about it. :&#x2F;