This is the only riff
E-----------------------------------------|
A--------------0-2------------------------|
D-0-2222-22-22-----0-2222-22-22-4-5-4-----|
G------------------------------------ x10-|
on the end of the third time, do this
E-------------------------------|
A--------------0-2--------------|
D-0-2222-22-22-----0-2222-22-22-|
G-------------------------------|