Create local variable list with *

I have a large number of variables starting with either with urb7, urb8 or urb9. I would like to create a local list that includes all these variables, but excludes variables such as urb3.

I tried

which gives out a syntax error and

which gives out "urb7* urb8* urb9*".

I would like to be able to see the full list of variables, so I can get the list working in a loop afterwards (but that's another story).

So, how do I get the list to contain: urb7_arbitrary_text1, urb7_arbitrary_text2, urb8_arbitrary_text1, and so on?

Thank you very much.

Best regards,
Milan