G    D   Am   C

then the first break is riff #1 once or twice.
the second break is riff #1 immediately followed by riff #2.

riff #1
E|---7--7-5-7--7-5-7-5-3--12--12-10-12--12-10-12-10-8-|
B|----------------------------------------------------|
G|----------------------------------------------------|
D|----------------------------------------------------|
A|----------------------------------------------------|
E|----------------------------------------------------|

riff #2
E|--12-10-8-10-----7-5-3-5---12-10-8-5--7-5-3-5-3-----|
B|----------------------------------------------------|
G|----------------------------------------------------|
D|----------------------------------------------------|
A|----------------------------------------------------|
E|----------------------------------------------------|