Intro I:

E|----------------------------------------|
B|----------4---------------------1---2---|
G|----------------------5-----------1-----|
D|------6-----------6---------------------|
A|----4---4-------3---3-------------------|
E|-----------------------------2----------| x4

Intro II:

E|----------------------------------------|
B|------2-------4--------6----------------|
G|----1---1---3---3----6---6-------8------|
D|-------------------------------6---6----|
A|----------------------------4-----------|
E|--2-------4--------6--------------------| x2