means strum a whole bunch (listen to record for timing) 

main riff& verse 
G|---------------------------------------------------------------------------| 
D|---------------------------------------------------------------------------| 
A|---9999----5555----7777----4444--------------------------------------------| 
E|---------------------------------------------------------------------------| 

chorus 
G|---------------------------------------------------------------------------------------------| 
D|-------11------------7------------9----------6-------------7-----------9-----------11--------| 
A|---99------9----55------5----77------7---44------4-----55-----5----77-----7----99------9-----| 
E|---------------------------------------------------------------------------------------------| 
ends on 
G|--------------------------| 
D|--------------------------| 
A|----/9--------------------| 
E|--------------------------|