Is "corram" an imperative as this would mean there are multiple imperatives and Duolingo only gives one? If this is the case I think Duolingo has "led me down the garden path", Google that phrase if you haven't heard it before ;). By the way, I moved to Rio as of two weeks ago :).
Yes, in Portuese we have imperative for all the persons, except for I...
How do we command, "them" then (eles/elas)?
I can only imagine the 3rd Person Imperative being used when talking directly to those in question such as "você, vocês, o senhor/a senhora, etc.).
I am intrigued to know though. :)