At first I thought the regex crosswords problems were way too hard. I had no idea what was going on, but for some reason I kept getting them right. I then realized that it was much simpler than I thought and I was actually thinking about them correctly. I subsequently realized I was doing the ‘tutorial’ problem set, and then once I moved onto the ‘basics’ set I realized that yes, I didn’t know nothing, but also I still have a lot more to learn.
I got stumped on this problem:

(my current wrong answer is put in)
What a roller coaster. I shall work on this more tomorrow!