[r-t] Undifferentials

[Graham John]

Ander wrote:

> I think this method is a wonderful example, but sadly it
> looks as if it does not lend itself to an extent

Agreed. The method I started with was more promising,
having the right number of rows for all the 123 and 456
cycles in the plain course. Unfortunately, I couldn't
adjust the cycles against one another for truth while
retaining the undifferential symmetry.

34.16.34.16.34-16-16-36.14.36.14.36-16-16-16.34.16.34.16-16-16-14.36.14.36.1
4-16-16-

Graham
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