Content with Many Layers of Hierarchy

I'd love to see some examples of how to design many, many layers of hierarchical content.  For example:

A. Content

1. sub content

a. sub sub content

i. sub sub sub content

I'm designing the course in Rise but if there's a Storyline element you think would work better, I am open to that, too.  I'm just at a loss of how to show the low level stuff without it getting lost or blending in with the higher level stuff.