Intro
The entire song is this pattern repeated.
The timing is simple, listen to the first few seconds of the song.
e|---------------------------------------------------------------------------|
BB|-5-----7-----8-----8-----7-----5-----5-----7-----8-----8-----12-----5------|
G+G|---------------------------------------------------------------------------|
D MajorD|---------------------------------------------------------------------------|
A augmentedA|-3-----5-----7-----7-----5-----3-----3-----5-----7-----7-----10-----3------|
E MajorE|---------------------------------------------------------------------------|