Very simple song and bass line: 

Intro 

G|-----------------------------------------------------------------| 
D|-----------------------------------------------------------------| 
A|-6-6-6-6-6-6-6-6-------------------------------------------------| 
E|-----------------7-7-7-7-7-7-7-7-9-9-9-9-9-9-9-9-6-6-6-6-6-6-6-6-|  x2 


verse 1 

G|-----------------------------------------------------------------| 
D|-----------------------------------------------------------------| 
A|-6-6-6-6-6-6-6-6-------------------------------------------------| 
E|-----------------7-7-7-7-7-7-7-7-9-9-9-9-9-9-9-9-6-6-6-6-6-6-6-6-|  x4 


Chorus 

G|-----------------------------------------------------------------| 
D|-----------------------------------------------------------------| 
A|-6-6-6-6-6-6-6-6-------------------------------------------------| 
E|-----------------7-7-7-7-7-7-7-7-4-4-4-4-4-4-4-4-6-6-6-6-6-6-6-6-|  x4 


verse 2 

G|-----------------------------------------------------------------| 
D|-----------------------------------------------------------------| 
A|-6-6-6-6-6-6-6-6-------------------------------------------------| 
E|-----------------7-7-7-7-7-7-7-7-9-9-9-9-9-9-9-9-6-6-6-6-6-6-6-6-|  x4 


Chorus 

G|-----------------------------------------------------------------| 
D|-----------------------------------------------------------------| 
A|-6-6-6-6-6-6-6-6-------------------------------------------------| 
E|-----------------7-7-7-7-7-7-7-7-4-4-4-4-4-4-4-4-6-6-6-6-6-6-6-6-|  x4 


Outro  

G|-----------------------------------------------------------------| 
D|-----------------------------------------------------------------| 
A|-6-6-6-6-6-6-6-6-------------------------------------------------| 
E|-----------------7-7-7-7-7-7-7-7-4-4-4-4-4-4-4-4-6-6-6-6-6-6-6-6-| until the end.