Riff 1
E|----------------------------------------|
B|----------------------------------------|
G|----------------------------------------|
D|---------------5-5-X-X-7-X-6-X-7-7-7S-9-|
A -X-X-3-X-X-3-X-3-3-X-X-5-X-4-X-5-5-5S-7-  x1
E|-X-X-1-X-X-1-X--------------------------|

Riff 2
E ----------------------------------------
B ----------------------------------------
G ----------------------------------------
D ---------------5-5----------------------
A -X-X-3-X-X-3-X-3-3-5-5-4---------------- X1
E|-X-X-1-X-X-1-X--------------------------|

Riff 1x3 then

E ----------------------------------------
B ----------------------------------------
G ----------------------------------------
D ---------------5-5----------------------
A -X-X-1-X-X-1-X-3-3-5-4-5-0-1------------
E|-X-X-1-X-X-1-X--------------------------|