Agreed. Somehow this bit of the note I wrote in response to Greg's digest reply was left out of what I sent (surely operator error, as I simply had to hit paste here below to get it back from the clipboard):

"I'll wait a bit more to hear if these are new/unique before working up name(s).

BTW, they're double progression. Believe the end effects work out to: never really out; if nobody is there on the left diagonal stay put to rejoin immediately at the chain."

Thanks,
-Don

On Wed, Jul 27, 2016 at 8:20 PM, Yoyo Zhou via Callers <callers@lists.sharedweight.net> wrote:

Also, Don, you might want to note these are double progression (the
result of left diagonal right and left thru).