There are 20 airport maps in the back of the Delta magazine, which had me wondering......

(1) Which airport has the highest number gate?
(2) Which airport uses the most letters for concourses?
(3) Which airport has the most building/terminal designations? (1-9, A-Z, Ewa/DiamondHead, N-S-E-W, etc)

In my domestic USA experience, just off the top of my head, maybe:
(1) EWR has gate numbers up in the 130s, but not sure if that's consecutive.
(2) ORD goes up to Concourse M--but skips A,I,J
(3) LAX designates up to Terminal 8--but does that include the Bradley International terminal?

In 2010, when I kvetch about long hikes in the airport since "my plane was at gate Z-99," I'd at least like to be accurate!

(Apologies if this info is elsewhere...I did a quick site search for "highest gate number")