wp_list_bookmarks

I am trying to create a front page broken down into sections. Each section is a link category. How can I display the single category only.

I tried this and it is not working.

<?php wp_list_bookmarks(‘limit=11′,’category=2′,’exclude_category=4,5’); ?>

currently I only have 3 categories but my goal is to have 12. I will know the number if for all of them. How can I display them properly?