Here now the third system of chord scales using diatonic seventh chords in the key of C-major with all the roots on the fourth string. This workout should be added to the previous two systems of roots on 6th and 5th strings.
If you actually have spent a few weeks on these workouts and have been consistent and thorough, this third system of learning diatonic chord scales will be comparatively quick. Master this set just like the other two, in a 5 to 10 minute daily workout routine, and you'll be off to study how to combine all three systems effectively in single positions on the fretboard of the guitar.