For example, the fifth and sixth characters of a SWIFT code are theISO 3166two-letter abbreviation for the country the bank is in. (With one exception: XR represents Kosovo, which does not have an ISO 3166 code.) You could replace [A-Z]{6} at the front of the regular expression with...
But TL;DR? Seriously? Are folks so hurried and rude that they can’t respond with something like, “Could you provide me an abstract or executive summary?” rather than this cryptic and snotty abbreviation? Heck, you can make that response into a custom signature block in Outlook, so it’...