Not all agree on what makes up the Spanish alphabet

It seems like finding out what the letters in the alphabet are would be quite basic. However, check various reference works about the Spanish alphabet and you'll find several different answers: Some say K and W are part of the Spanish alphabet, but some say they aren't. And CH and LL sometimes are treated as a single letter, sometimes not. The closest thing to an official list comes from the Royal Spanish Academy. See what the Academy has to say...