Can you loop on a deep-structure itab within Smartforms?

I know that Smartforms lets you pass a table to Smartforms and that you can loop on this itab.

But suppose the itab has deep-structure - each row has another itab in it.  (This is common, for example, in APO.)

Then within the outer loop on the outer itab, can you loop on the inner itab within each row?

Thanks for your kind advice here.