[r-t] 20-part Grandsire Triples

[Alexander Holroyd]

I feel sure I cannot be the first to do this (probably by several 
centuries), but I have not found anything like it out there.  Can some 
knowledgable person fill me in?

5040 Grandsire Triples

 	23456
A	52364
3(B*)	34265
B	25364
4(AB)	42536
A*	43265
4(AB)	54326
A*	52463
4(AB)	35246
A*	34562
4(AB)	23456

A = -p--
B = pp-p-s--sp--p-
* = replace last - with s