Note (6th July 2013): Guitar Fanatics! I have amended this file as it was incorrect before. Please download this new version.
This Lesson File extends 3 Notes Per String Shape 1 - Triads.
View that if you haven't already.
To extend the chord to include the 13th interval, simply add the triad that would start from the 9th interval, 1,3,5,7,9,11,13.