Is it possible to setup phpbb seo this way?

example.com/general-category/ - for General category
example.com/general-category/board-name/ for Board Name in General category
example.com/general-category/board-name/sometopic.html - For a topic in Board Name in General category

Like a tree... To see where you are located.
At the moment, the /general-category is missing in the url.