Why does Taco Bell repeat your order in a completely different way than you gave it (seemingly random)?

This is a question more than an answer, but have you noted any pattern to the ordering in which they read the order back? i.e., alphabetical, exactly reverse from the way you ordered it, or certain types of items clumped together? If we could just get at the code of the OE system. Or maybe they're just purposely randomizing it to see if you're paying attention :)