Kay this is my first tab but i was messing around and discovered how to play this so 
goes:

can play in standard

Main Riff/Verse
-----------------------------|
-----------------------------|
-----------------------------|
-88--11--13------------------|
-88--11--13------------------|
-66--9---11------------------|
Variation
---------------------------------------|
---------------------------------------|
---------------------------------------|
-888--1111-13--------------------------|
-888- 1111-13--------------------------|
-666--9-9--11--------------------------|
Riff 2
---------------------------------------|
---------------------------------------|
---------------------------------------|
-13----13-17-13-11---------------------|
-13----13-17-13-11---------------------|
-11(x3)11-15-11-9----------------------|

well thats basically it, all those chords are right so the only problem might be the 
order or something, the rest of the thing is improvization.