Riff 1: A                  B
E|----------------|---------------------------------------------------------------------------------|
B|----------------|---------------------------------------------------------------------------------|
G|----------------|---------------------------------------------------------------------------------|
D|-44-44----------|---------------------------------------------------------------------------------|
A|-22-22| x's 17---|--------------------------888-999-101010-11-10-9--111111-121212-131313-14-13-12^^
E|----------------|-777-888-999-10-9-8| x' 4---------------------------------------------------------

Riff 2:
E|--------------|
B|--------------|
G|--------------|
D|-44--5-5------|
A|-22--3-3| x's 6
E|--------------|

Riff 1: B x's 12 (it switches off between them. you can use anything really as the combo for variety.)

Riff 3:
E|------------------------------|
B|------------------------------|
G|------------------------------|
D|-10-9---------10-9------------|
A|-10-9-9-8-77--10-9-9-8-777-999|
E|------7-6-55-------7-6-555-777| x's 2