Slipknot - 515, аккорды

slipknot - (515)
from the album 'iowa'

I can't say this is the right way but it's how I play it
(its the first song that I tab)
_________________________________________________________________________________

riff 1:

|---9-12-13-10----9-12-13-9----9-12-13-10----9-12-13-10-|
|-9-------------9------------9-------------9------------|
|-------------------------------------------------------|
|-------------------------------------------------------|

riff 2:

|---9-12-13-10-12----9-12-13-10-12----9-12-13-18-17----9-12-13-18-17-|
|-9----------------9----------------9----------------9---------------|
|--------------------------------------------------------------------|
|--------------------------------------------------------------------|

order:

riff 1
riff 2  (2x)
riff 1
riff 2