riff 1
G|---------------------|
D|---------------------|
A|---7-----------------|
E|-5---7-7-7-7-7-7-7-7-|

riff 2
G|-------------------------------------------------|
D|-4--4--4--4--4--4--4--4----------------------5-7-|
A|-----------------------------7-7-7-7-7-7-7-7-----|
E|-------------------------5-7---------------------|

riff 3
G|-----------------------------------------------------------|
D|---------5-5-5-5-2-2-2-2-7-7-7-7---------5-5-5-5-----------|
A|-7-7-7-7-------------------------7-7-7-7---------5-5-5-5-5-|
E|-----------------------------------------------------------|