A student request. This is the first thing I've ever written for double bass in my life— I don't play it, it's not my thing. It doesn't matter. This page of exercises will work for getting together your 32nd note single stroke short rolls— which seems to be a large part of what people do with this area of drumming. Lots of short rolls and ruffs.
The 16th note patterns are the skeleton of the accompanying 32nd note lick, so as a warm-up, you should be able to play the patterns in 2/4 solidly with either foot. Play the entire page as written, with the right foot leading, and also play it reversed— left foot lead.