The key varies with the version.

Intro
Abm A B E
A E B E
----------------
1-
E C#m
Abm
A
E9
A E
B E
----------------
2-
Abm Gdim Abm
F#m B
A A
E B E
----------------
Song structure
Intro - 1 - 2 - Intro
Intro - 2 - Intro - Intro
     E9       Gdim
|----x---------3-----|
|----5---------2-----|
|----8---------3-----|
|----6---------x-----|
|----7---------x-----|
|----x---------3-----|