Something odd has happened, and my apologies if two posts from me appear one after the other. I posted a few minutes ago, but nothing has appeared - this hasn't happened before. So I'll post it again (if I can remember what I said).
I find it strange that others find the final stage unambiguous. I can find 3 ways of carrying out the instruction, all of them leading to a different submission. I would welcome an exchange of views, but not here.
mrbaddie "at" btinternet "dot" com will find me. Here's hoping!