------------------------------------------------------------------------    
------------------------------------------------------------------------
-----------------------5---4---5----4----5---4------5------4-----7--7---
------------------------------------------------------------------------    varias vezes 

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-----2----2-----3--2---3---2--------5----5-----------------------------
-----------------------------------------------------------------------     refrao

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------------5---5----4-----5-----4---------5-4-5-4-5-4-5-5-4----------
--1--1--3--3----------------------1--1--3-3---------------------------

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--3--3--5--5--------------------------------------------------------