riff 1
e|--6---7---6---6---6---4---4---4---4--4-----
b--5---5---5---5---5---5---5---5---5 -5------
g--4---4---4---4---4---4---4---4---4--4------
d--------------------------------------------
a--------------------------------------------
E|-------------------------------------------

Riff 2

e|-------------------------------------------
b----8---8---8---8---8---6---6--6---6--------
g----6---6---6---6---6---6---6--6---6--------
d----6---6---6---6---6---6---6--6---6--------
a--------------------------------------------
E|-------------------------------------------

riff 3

e|----(b9)--(b9)-(b9)-(b9)---(b9)-(b9)-(b9)-(b9)--------
b----5---5--5--5----6--6--6--6----------
g---------------------------------------

riff 4

e|----------------------------------------------------
b----6--6--6----5--5--5---5---5--5----6--6--6---------
g----x--x--x----x--x--x---x---x--x----x--x--x---------
d----3--3--3----8--8--8---8---8--8----(b9)-(b9)-(b9)--------
a-----------------------------------------------------
E|---------------------------------------------------- about 2x