How to search for trademarks beginning with a particular word

I got a fun trademark register search query today: can we search for a mark which starts with a particular word?
I'm fairly sure this isn't possible in TESS, at least not in any way I know (there are a LOT of unwritten TESS tricks though, so I'm not 100% on that).

However, it DOES appear to be possible with the new tool. I hypothesized that combining a full mark search with .* truncation at the end (which allows for any succeeding number and combination of characters, including zero) would do the trick.

I tested this out by searching a word that I happen to know is very rare in trademarks: axolotl! Since there are only 32 marks (live or dead) containing "axolotl" on the US Trademark register, only 4 of which do /not/ start with it, I was able to easily test the accuracy of my hypothesized search string. When it pulled up 28 results, all starting with axolotl, I knew it worked!

So now we know that
FM:/mark.*/
can be used to bring up all marks starting with "mark"!

Huzzah! Fun trademark search tricks! I'm really enjoying discovering all the things this new search tool can do.