E|----------------------------|
B|----------------------------|
G|----------------------------|
D|----------------------------|
A|--5-5-7-5-8-5-7-5-----------|
E|--3-3-3-3-3-3-3-3-----------|

That's the basic riff but you could also go higher


E|----------------------------|
B|----------------------------|
G|----------------------------|
D|--5-5-7-5-8-5-7-5-----------|
A|--3-3-3-3-3-3-3-3-----------|
E|----------------------------|