Riff 2
G|------------------------------------------------------------|
D|------------------------------------------------------------|
A|------------------------------------------------------------|
E|--6--6--6--6------4--4--4--4------2--2--2--2----|
play that 2 times and then:
Riff 3
G|--------------------------------------------------|
D|--------------------------------------------------|
A|--------------------------------------------------|
E|--6--6--6------8--8--8---10--10--10---|
play that two times and then go back to Riff 1 and repeat that sequence