Prodigy - Invaders Must Die Bass

this tab is the bass line for prodigy's invaders must die.
standard tuning;
G
D
A
E

intro
|------------|
|------------|
|------------|
|-9-9-9-99-9-| (x15)

bass line(pretty much throughout the whole song)
|----------------------|--------------------|
|----------------------|--------------------|
|----------------------|--------------------|
|-9--9--7--2-2-1-1--1-1|-12--12--7--7--7-9-9|