riff 1
E|---------------------------------------------------------|
B|---------------------------------------------------------|
G|-------------------------------------5-------------------|
D|-----4-------4-------4-------4-------5-------5-4-4-4-2-4-|
A|-----4-------4-------4-------4-3-3-3-3-------5-4-4-4-2-4-|
E|-2-2-2-2-2-2-2-2-2-2-2-2-2-2-2---------3-3-3-3-2-2-2-0-2-|
 . .   . . .   . . .   . . .   . . .   . . .

riff 2
E|---------------------------------------------------------|
B|---------------------------------------------------------|
G|-------5-----------------------5~------------------------|
D|-4-----5-x4-5----4-4-4-2-4--x2-5~------------------------|
A|-4-x16-3----5-x4-4-4-4-2-4-----3~------------------------|
E|-2----------3----2-2-2-0-2-------------------------------|

riff 3
E|---------------------------------------------------------|
B|---------------------------------------------------------|
G|-------5-5-5---------------------------------------------|
D|-4-4-4-5-5-5-5-5-4-2-------------------------------------|
A|-4-4-4-3-3-3-5-5-4-2-------------------------------------|
E|-2-2-2-------3-3-2-0-------------------------------------|

riff 4
E|---------------------------------------------------------|
B|---------------------------------------------------------|
G|-------5~------------------------------------------------|
D|-4-----5~--x2--------------------------------------------|
A|-4-x16-3~------------------------------------------------|
E|-2-------------------------------------------------------|