| Relationship | Method(s) |
|---|---|
| Non-conforming extension | Amersham Alliance Doubles |
| EP3-1ABCD/4BC | [Unnamed] Alliance Royal, Fourteen, Eighteen, Twenty-Two |
| EP3-1BC/4BC | [Unnamed] Alliance Major, Royal, Maximus, Fourteen, Sixteen, Eighteen, Twenty, Twenty-Two, Twenty-Four |
| EP4-2/1:2:4 | [Unnamed] Alliance Major, Royal, Maximus, Fourteen, Sixteen, Eighteen, Twenty, Twenty-Two, Twenty-Four |
| EP4-2/3:4:2 | [Unnamed] Alliance Major, Royal, Maximus, Fourteen, Sixteen, Eighteen, Twenty, Twenty-Two, Twenty-Four |
| Collection | Chapter | Page | Reference |
|---|---|---|---|
| Ringing World (1928) | 745 |