This is the main bass riff in the song. There may be some variation riffs, 
but I don't know them. 

G :-----------------------------------------------------------------------|
D :-----------------------7-9-7---------------------------7-9-7-----------|
A :--10------10-9--5-7-0--------10-7-10------10-9--5-7-0--------10-7-10---|
E :------10------------------------------10-------------------------------|