Machinehead - Bush

This song is fairly easy to play, this is only the intro and main riff
There are a couple of other chords that im not sure what they are

Standard Tuning
intro - with distortion on
e------------------------------------------------
b------------------------------------------------
g--6--6-/-8--8-/-9--9-/-11--11-------------------
d--6--6-/-8--8-/-9--9-/-11--11-------------------
a--4--4-/-6--6-/-7--7-/-9---9--------------------
e------------------------------------------------