the whole song on same riff
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-4-5-5-4---------------2-3-3-2---------------------------------------|
-4-4-4-4---3-3-3-4-3---2-2-2-2---1-1-1-2-1---------------------------|
-----------4-4-4-4-4-------------2-2-2-2-2---------------------------|
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This should not be too difficult.