Stan,

 

You are not mistook at all. I wrote Jansy off-list (where I try to stay when I don't have time to check my words) in a fit of caffeine-free delerium, and should now throw myself under the bus with Carolyn. Suffice it to say that <<Prends>> is correct, not <<prend>> and that the entirety of the line I zipped off to Jansy was addled.

 

But as Laurence noted, Jansy was correct on the preposition involved.

 

Andrea