The little letters are minuscule, and the big ones are majuscule (even though my spell checker wants to change it back to minuscule). Only multilingual wiz kids Elena and Konrad knew that nugget of trivial infinitesimality, for which they deserve infinite praise. Well, maybe just barely finite praise. No matter. They'll have a chance to extend the glory if they can get this one right:
What two letters of the English alphabet were last to be added to the Latin alphabet from which they came?