intro:

E|----------------------------|
B|----------------------------|
G|----------------------------|
D|----------------------------| 4X
A|------12(x3)----11(x2)------|
E|-12(x3)---------------------|

once you have done that 4 times do this

E|-----------------------------|
B|-----------------------------|
G|-----------------------------|
D|-----------------------------|
A|-14(x3)--12-11-9(x4)-11-9----|
E|-----------------------------| and then keep on repeating the first step