The song's called Alex, it's by the band Girls


This is my first time working out chords for myself. Anyway, I'm fairly certain the opening chord is E, but the confusion comes in the next two changes. I believe it could be a C into an F for the next two changes, but it also possibly sounds like C into B or perhaps the other way around for either suggested change. What is it?

Also, if someone could tab the interludes, that would be great!!