This is played on the piano but I figured out how to play it on guitar, which is below.
[ Tab from: http://www.guitaretab.com/d/dr-hook/376395.html ]
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5-7-10-12-12-10-12-10-7-12-14-14-10-10|
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5-7-10-12-12-10-12-10-7-12-14-17-10-10|
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I'm not sure if I have the first set right but that's how it sounds to me.