there are only 2 riffs. one for the verse and chorus and one for the ending.

RIFF 1

E|---------------------------------------|
B|---------------------------------------|
G|-9-9-------------7-7-------------------|
D|-9-9----8-9-9----7-7----6-7-7-7--------|
A|-7-7----8-9-9----5-5----6-7-7-7--------|
E|--------6-7-7-----------4-5-5-5--------|

RIFF 2

E|---------------------------------------|
B|---------------------------------------|
G|---------7-----4-----------------------|
D|-7-------7-x4--4-x4--------------------|
A|-7-x8----5-----2-----------------------|
E|-5-------------------------------------|

the part before the ending is done with some effect i don't know how to make. find out for yourself.