At the chorus:
Riff 2
G|------------------------------------------|
D|------------------------------------------|
A|------------------------------------------|
E|-4----4h4----0--0--0--0--0--0---|
play riff 1 again and sometimes play this in the middle of it:
Riff 3
G|-----------------------------|
D|-----------------------------|
A|2--2--2-------------------|
E|-------------0--0-0-0----|
Play Riff 2 and then:
Riff 4
G|-----------------------------------------------------------------------------------|
D|-----------------------------------------------------------------------------------|
A|--4-----4h4-------------------------------4--4h4------------------------2--|
E|------------------0-----0--0---0---------------------------0---0-5h---------|
on the last time play this instead:
G|------------------------------------------------------------|
D|------------------------------------------------------------|
A|--4----4h4------------------------4--4h4--5---------|
E|----------------0-----0--0--0---------------------------|
then during the solo play:
Riff 5
G|------------------------|
D|------------------------|
A|-2-----------------4--|
E|------4--0h2--------|
right before Billy comes in play:
G|------------------------|
D|------------------------|
A|-4---6----7----9-----|
E|-------------------------|
Play Riff 2 and Riff 1 to the end.
