The order is: Part A(3x) Part B(1x). Repeat.

Part A               Part B
G|----------------|-----------------|
D|-----1-1-----1--|-----1-1---------|
A|---------1------|---------2-1-0---|
E|-0--------------|-0-------------4-|
   1 & 2 & 3 & 4 &  1 & 2 & 3 & 4 &

This is repeated almost throughout the entire song. 
With the following exceptions.
1. that in the first verse when he says "Chicks and dudes," do not play the last 3 notes of Part B.
2. that you only play the above pattern once in the second verse, rest 4 measures, and resume.

well that's it, have fun with the song. 
-nick