Riff1                           
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D------------4—--7-----------4—--7-----------4---7------------4---7-----
A------5---------------5---------------5----------------5---------------
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D-----------------------------------------4----7--------4----7----------
A---------4----7--------4----7------5--------------5--------------------
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Riff2
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D----4—44—4---7—4-----------------------------------------5---
A------------------7---5---------------------------5---7-----7
E-------------------------7---5----7—77---7—--5---7-----------

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A---7—7---57---7---7---57----7---7---57--75--
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Just a rough do, you should be able to work it out properly from this, this is just the way I like to play it