[r-t] parity

Robin Woolley robin at robinw.org.uk
Mon Jun 25 15:14:48 UTC 2007

By way of as 'PS' to my last.

Fred said: "This algorithm  holds only for neighbouring bells, ...... i.e. 
you can
only apply it one change at a time. For example,
324156 gives 21100[0] = 270
624153 gives 51201[0] = 637"

Who would want to ring these two changes successively?


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