Intro part 1:
E|-------------------------------------------|
B|---12--------------------------------------|
G|-------------------------------------------|
D|--------14-14-12-14---14-14-14/9---9-9-9---|
A|-------------------------------------------|
E|-------------------------------------------|

E|--------------------------------------|
B|---12---------------------------------|
G|--------------------------------------|
D|--------14-14-12-14/7-9-9-9---9-9-9---|
A|--------------------------------------|
E|--------------------------------------|

Intro part 2:
E|---------------------------------------|
B|---------------------------------------|
G|---------------------------------------|
D|---/12----12-12-10-9/7---7-9---9-9-9---|
A|---------------------------------------|
E|---------------------------------------|

E|-------------------------------------------|
B|-------------------------------------------|
G|-------------------------------------------|
D|---/12----12-12-10-9/7---9-9-9-8---8-8-8---|
A|-------------------------------------------|
E|-------------------------------------------|

Intro part 3:
E|--------------------------------------------------|
B|---12---------------------------------------------|
G|--------------------------------------------------|
D|--------14-14-12-14/17---17-17-17-16---16-16-16---|
A|--------------------------------------------------|
E|--------------------------------------------------|

E|--------------------------------------------------|
B|---12---------------------------------------------|
G|--------------------------------------------------|
D|--------14-14-12-14/17---17-17-17-16---16-12-12---|
A|--------------------------------------------------|
E|--------------------------------------------------|