Tempo = 120
Signature : 6/4

The bass and the guitar play this riff all the song. 
Somethimes there are some little variation, an the end mostly.

E |---------------------------------------------------||
B |---------------------------------------------------||
G |---------------------------------------------------||
D |-------3---------3s5----3------3-------------------||
A |--3s5--------5--------------5-----3/5--------------||
E |---------------------------------------------------||
      +   -   + -     +     -  +  -  + - + -

Time:
+ = beat (6)    - = 1/2 beat