this is played like the 12 bar blues just power chords with pinky tapping the fret 2 up from the actual power chord part

intro
A
verses
 the b is played on the 7th fret
A B G D A
pre chourus
F  C G D A 

CHOURUS 
this is played with all power chords
                            E
it's just a jump to the left.....
                       A
and a skip to the right..... 

                        E
                        d
ORDER
intro
verse
prechourus
chourus
prechourus
verse
prechourus
chourus
verse
prechourus
chourus
prechourus