intro:
e|-----------------------------------------
b|-------------------------------------------
g|-11-9-11-9-12-9-12-9--9--9-11------------------------------
d|---------------------------------------------
a|--------------------------------------------
E|----------------------------------------------
e|-----------------------------------------
b|-------------------------------------------
g|-11-9-11-9-13-9-13-9--9--9-7------------------------------
d|---------------------------------------------
a|--------------------------------------------
E|----------------------------------------------
repete......