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

RIFF 2  C-string=palm-muted, F-string=slightly palm-muted.

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

As played sometimes. C string = palm-muted
E|----------------------------------|
B|-1-----1-----1---1-----1-----1----|
G|-2-----2-----2---3-----3-----3----|
D|---0-0---0-0---0---0-0---0-0---0--|
A|----------------------------------|
E|----------------------------------|


RIFF 3 C-string=palm-muted, play the chords as in RIFF 1 (').

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

RIFF 4. C string = palm-muted, F-7 = slightly palm-muted

E|---------------------------------|
B|---------------------------------|
G|-----7-7-----7-7-----7-7-----7-7-|
D|-0-0-----0-0-----0-0-----0-0-----|
A|---------------------------------|
E|---------------------------------|


RIFF 5/ END RIFF  C-string =palm-muted, cut the chords by pressing with the fretting 
let ring the last chord.

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