I LOVE your use of the "ISSUER" dictionary; It makes it easier to add to or adjust later.

I appreciate the feedback.

This my second translation I've ever submitted.

• I do need to remember changing cases depending on the language.
• I also need practice setting up test, in particular figuring out to create the random tests.

If you have any other tips or feedback, I'd love to read it.

Great first kata! I feel like this could definitely be a relevant/useful function for a game.

I may have gone against Leon and used Regex. :)