At 12:09 on 15 May 2014, Robin Woolley wrote: > PPS - For the benefit of PJE, I should have added 'to asymmetric > methods' to the words "that if we had a 1440 in which each row occurs at > both hand- and back-stroke, it should be true". And, for my benefit, you should have defined what you mean by a 1440. JEC