Riff 1

E|-------------------------------------------------------|
B|-------------------------------------------------------|
G|-------------------------------------------------------|
D|-------------------------------------------------------|
A|------0-000--2-3-333-0---------------------------------|
E|---0--------------------3--333--0--3-------------------|

Riff 2

E|-------------------------------------------------------|
B|-------------------------------------------------------|
G|-------------------------------------------------------|
D|-------------------0-2-222---2-------------------------|
A|-----0-000-2-3-333---------3---------------------------|
E|--0----------------------------------------------------|

Riff 3

E|-------------------------------------------------------|
B|-------------------------------------------------------|
G|---2-222-----------------------------------------------|
D|-2-------2-2-222---------------------------------------|
A|-----------------3-0-----------------------------------|
E|-------------------------------------------------------|

Riff 4

E|-------------------------------------------------------|
B|-------------------------------------------------------|
G|-------------------------------------------------------|
D|-------------------------------------------------------|
A|------------3-3--3-3-0-0---0---------------------------|
E|--0-1-111-1--------------3-----------------------------|