6. Expansions

Several manuals are also an important idea here. If you  only change 5 tones from C 0, you can get a similar setup Ab +2. The same can be done with Bb +1 to get D -1. All the time they complement each other chordally and still with a halved comma shift,

You get 34 pitches with major triads from Gb major to F # -dur, and minor triads from Bbm to D# m. (Seen from the circle of fifths)