Por primera vez

e---9--9-9-11--11-11-9-----------------9-9-9-------------
B----------------------12--12-12-10-9-------12-10-9----9-
G-9-------------------------------------------------11---
D--------------------------------------------------------
A--------------------------------------------------------
E--------------------------------------------------------

e---9--9-9-11--11-11-9-----------------9-9-9--------------
B----------------------12--12-12-10-9--------12-10-9------
G-9--------------------------------------------------11-9-
D---------------------------------------------------------
A---------------------------------------------------------
E---------------------------------------------------------