Looking for some assistance on doing this:

I have a piece with 4 sections in it (A, B, C, D). Section B is 4 measures, with a 1 measure 1st and 2nd ending. So overall this equals 8 played measures. Sections C and D are similarly structured.

My question is how, in iRealPro, can I make the entire B section play 2x through? In other words play the B section with 1st and 2nd endings, all 8 measures - and then do that exact same thing once again, before proceeding on to the next section?

The caveat: Because I already have four sections, I am severely limited on the number of lines I can have (12 I believe?), so simply copying and repeating the entire section twice is a waste of precious space that would leave no room for the following sections C and D. I'm hoping for a way to note this in iRealPro.

The kicker: Of course, I want to be able to do this "section repeat" for sections C and D also!

Possible? Ideas?
Thanks!
*-- Asha