Case In Fact

  Intro:                                               
E|--------------------------------------|
B|---1-3-1-------0----------1-----------|
G|---------0-2-2---2-0-0--0---0--0---0--|
D|----------------------3---------------| <-3 is optional
A|-3---------0-0------------------------|
E|--------------------------------------|

  After Intro:
E|------------|
B|------------|
G|------------|
D|-1-1-0---0--|
A|-------3----|
E|------------|