Combining 'depth' with 'include' in wp_list_pages()

Question

I am using wp_list_pages to display my navigation that contains only specific top-level pages using the include parameter.

However, I would like to display the child pages of those top-level pages.

I would have thought this would be possible with:

<?php wp_list_pages('title_li&depth=2&include=8,12,16,20,10,14'); ?>

But it doesn't appear to work. If I remove the include parameter then it seems to work fine, but then it pulls in every page on the site.

Answer 1

I imagine WordPress mustn't allow that, so I ended up going with exclude instead

<?php wp_list_pages('title_li&depth=2&exclude=4,214,18'); ?>