Watch the Falling Flat online guitar lesson by Brad Carlton from Chord Studies: Evolving Triads Vol. 1
Here we are using the same I - IV - V in the key of A from the previous example. Notice that our A form comes right out of the E form from the CAGED system, and then you have to simply flatten your third finger in order to get the D chord. For measures three and four, you drop back and play the E chord, which comes out of the C form of the CAGED system.