Stacking Wordlists

Hi everyone

I just started playing around with oclHashcat and I am having some trouble figuring something out.

In a nutshell I want to row up several wordlists and have oclHashcat kind of just bruteforce its way through all of them, rather then sit there and wait for it to finish one then load the next.

Is this even possible?

If yes could someone help me with the commands that I would need to enter.

Thank you.