intro:

E|-------10------------10------10-------------|
B|-10-13----13---10-13----13-------13-12---12-|
G|--------------------------------------------| X
D|--------------------------------------------|
A|--------------------------------------------|
E|--------------------------------------------|

E|-------------------------------------------------------------------|
B|---------------10----9----------------13----12-----10-10-----10-10-|
G|-9-10-12-10-------------9-10-12-10---------------------------------|
D|-------------------------------------------------------------------|
A|-------------------------------------------------------------------|
E|-------------------------------------------------------------------|