Afficher la catégorie et la sous-catégorie dans les listes ?

In lists of topics, Discourse shows the category OR subcategory for each topic. Is it possible to show category AND subcategory?

Example. Imagine this structure of categories and subcategories:

  • Math
    • Level 1
    • Level 2
  • Philosophy
    • Level 1
    • Level 2
  • Music
    • Level 1
    • Level 2

By default, a topic list shows subcategories only:

  • How do I play the Piano? - Level 1
  • Was Descartes wrong all along? - Level 2
  • I can’t get my taxes right - Level 1

In such context, it would be useful to show the categories as well:

  • How do I play the Piano? - Music - Level 1
  • Was Descartes wrong all along? - Philosophy - Level 2
  • I can’t get my taxes right - Math - Level 1

Just in case it helps, I am using the Graceful theme.