These are the main parts of the song, The chords in the chorus are G, D, and A5.

This is the Main Riff: Play G major in between
the stop/starts of this riff:
E-----------------------------------------------|
A-20202--XX-XXXXXXX--20202--XX-XXXXXX-----------|
D-44444--XX-XXXXXXX--44444--XX-XXXXXX-----------|
G-----------------------------------------------|
B-----------------------------------------------|
E-----------------------------------------------|

Chorus: This is just something I made up that works...
E----------------------------------------------------------------------|
A----------------------------------------------------------------------|
D-------------------------------------------------------------------12-|
G-7-7-7-7-7-99-77-99-77-99-11-11-11-11-11-99-1111-99-11-99-12-11-12----|
B----------------------------------------------------------------------|
E----------------------------------------------keep repeating----------|