I did not succeed to get a simple 3 levels indented list with Restructuredtext:
$ cat test.rst
Title
======
- aaaa
- aaaa2
- aaaa2
- aaaa3
- aaaa
- aaaa
Ok
$ rst2html test.rst > /tmp/a.html
test.rst:7: (ERROR/3) Unexpected indentation.
$
I've try different combination of spaces in front of aaaa3
but I get in all cases (ERROR/3) Unexpected indentation.