OK, I love this song and here is the riff tabbed out for you (my first ever tab so let me know if there are any corrections):
Riff 1
G ---------3---------
D 5--3--5----5--3--5- X2
Riff 2
G -------------------
D 5--7-7--9-9--12-12-
Play Riff 1 and 2 followed by (not 100% sure about this):
G -------------------
D 5555h7s9 9-s12 12-12-
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