Watch the One - Two - One Forms online guitar lesson by Brad Carlton from Guitar Lab: The Golden Arp
Let's look at ex. 20. We have a one-two-one form in 2nd inversion. Since it is quite stretched out in the lower frets, we'll move it up to the higher register for comfort. Measures one and three involve a "hop" of the 2nd finger. This requires dampening so be cautious. Measure four is not very practical but measure two is the real gem in this lesson. Study the video to see the potential of this particular arpeggio. Try playing it monophonically as well as polyphonically. Also remember to try double-stop combinations extracted out of the arpeggio form.