Hi,
Well, there is an option to include the results by IDs, but the problem is, that all post types are stored in the same table in WordPress – including posts and pages. That means, that restricting by IDs applies to posts as well, so you would only get pages 10-12 in the results, nothing else.
The best option is probably adding the pages to categories or other taxonomy, and exclude that. Then later on, you can just move the pages you don’t need to the excluded category.