Main Riff x3:

E|----------------------|
B|----------------------|
G|----------------------|
D|----------------------|
A|----------------------|
E|-0-0--2-2-2-2b(1/2)-2-|

Riff 1

E|----------------------------|
B|----------------------------|
G|----------------------------|
D|----------------------------|
A|----------5h7h9-7p5h7p5-----|
E|-0-0--5h7---------------7p5-|

(Main Riff x3)
(Riff 1)

Riff 2 x3:

E|-----------------------------|
B|-----------------------------|
G|-----------------------------|
D|-----------------------------|
A|-----7-----------------------|
E|-0-0----6-6b(1/4)-6b(1/2)-6b-|

(Riff 1)
(Riff 2)(x3)
(Riff 1) 

Riff 3 x3:

E|-----------------------------|
B|-----------------------------|
G|-----------------------------|
D|---------------------2-------|
A|-----7--------2--1-2---------|
E|-0-0----0-2-3----------------|

(Riff 1)  
(Main Riff)(x3)

(Riff 1)(x5)
(Riff 2)(x3)

(Riff 1)  
(Main Riff)(x3)

(Riff 1)  
(Main Riff)(x3)

(Riff 1)(x4)
(Riff 2)(x3)

(Riff 1)  
(Riff 2)(Riff 3)(x3)

(Riff 1)  
(Main Riff)(x3)

(Riff 1)  
(Main Riff)(x3)

(Riff 1)(x5)
(Riff 1)(Riff 3)  

(Riff 2)(x3)
(Riff 2)(Riff 3)  

(Riff 2)(x6)