[r-t] "X above, Y with, Z below"

[Richard Weeks]

To generate touches for this "{X,Y,Z}" scheme, it seems more in the 
spirit of things to vary the reference bell rather than to resort to 
standard calls.

In this way, for example, for {X,Y,Z}={Glasgow,Belfast,London}
https://complib.org/method/32305?accessKey=f425e63c3ec7235f059d18863589bf6fa3ca38df

which has 640 changes in its plain course, a 1250 can be achieved with 
the reference bells lead-by-lead:

   2  2
   3  3  3  3  3  3  3  3
   2  2  2  2  2  2
   3  3
   2  2  2  2
   3  3  3  3
   2  2
   3  3
   2  2  2  2
   3  3
   2  2
   3  3

This can be seen at:

https://complib.org/method/32318?accessKey=b5be02a864a12e146b2c8caff6dcd695231b9775

where I've represented it as a method rather than a composition as I 
think that's probably the only way I can do it.