introduçao
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3----------------3-3--5-55 X10
4-6-666--8-888--3---------
verso
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2-------------------
3------------------- X5
4-66-6--11-1--55-555
refrao
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2---------------------------------------------
3---------------------------------------------
4-66-6--11-1--55-555-66-6--8-88--1010-10101010 X2