Date: 20 July 1981 23:14-EDT
From: Alan Bawden <ALAN at MIT-MC>

Here's a problem I don't think I have seen asked before:

....

Another way of asking the problem would be: How large is the subgroup
generated by just five of the six quarter twists.

According to the Fusrt-Hopcroft-Luks algorithm, they are the same
size. I would appreciate Hoey and Saxe to confirm this (I think I
have all the bugs out of my code). Sorry for such a brute force
method, but it only took a few minutes.