riff 1a
e--------------------------------------------------------------------------|
b--------------------------------------------------------------------------|
g--------------------------------------------------------------------------|
d-222233334444555522221111222233334444555522221111333344445555666633332222-|
a--------------------------------------------------------------------------|
e--------------------------------------------------------------------------|

riff 1b
e---------------------------------------------------------------------------|
b---------------------------------------------------------------------------|
g---------------------------------------------------------------------------|
d-555566667777888855554444--------------------------------------------------|
a--------------------------222233334444555522221111222233334444555522221111-|
e---------------------------------------------------------------------------|

riff 1c
e--------------------------------------------------|
b--------------------------------------------------|
g--------------------------------------------------|
d--------------------------------------------------|
a-333344445555666633332222555566667777888855554444-|
e--------------------------------------------------|

riff 2 here is played 4 times
e--------------------|
b--------------------|
g--------------------|
d--------------------|
a--------------------|
e-222222111111000000-|