Quote:It does not matter if you reverse lookup between A&B as a whole / or A first and then B language words and compare them, the resulting words are the same.
You seem to misnterpret what I mean. As a side comment, we don't know if a vord is an "A language vord" or a "B language vord" until we ascertain that this vord's occurrences are limited to the A-folios or to the B-folios, respectively. But I don't speak of vords limited to A or B. I speak of vords that are unique to A (or B) and ask whether, at the same time, they are used in B (or A). (It is trivial that a VMS-wide unique vord would not occur elsewhere, so such vords are explicitly omitted from consideration as indicated in my items 5 and 6).