e |---------------------------------------------------------
B |---------------------------------------------------------
G |--6-6-6-6--6-x----------4------4-4-4-4--4-x----------6---
D |--6-6-6-6--6-x--4-4-4-4-4------4-4-4-4--4-x--4-4-4-4-6---
A |--4-4-4-4--4-x--4-4-4-4-2------2-2-2-2--2-x--4-4-4-4-4---
E |----------------4-4-4-4----------------------4-4-4-4-----
this riff is played 4 times as an intro,and played as a chorus and some kind of bridge
e |----------------------|
B |----------------------|
G |----------------------|
D |----------------------|
A |-------2--------------|
E |--0-------1-1-1--3----|
E
[ Tab from: http://www.guitaretab.com/p/presidents-of-the-usa/15000.html ]