Marcus, Of course I accept your apology, and thanks for your quick clarification. In case it isn't obvious to others, I mistakenly thought "DE 19" and "DE 10" etc. referred to ballots, intead of pairwise comparisons. So I (not too cleverly) thought that > "DE 19" is changed to "DE 10" > meant "throw away 9 DE ballots"! Chris Benham