| Relationship | Method(s) |
|---|---|
| 1AB/2EF extension | [Unnamed] Bob Royal, Maximus, Fourteen, Sixteen, Eighteen, Twenty, Twenty-two, Twenty-four |
| 1AB/1DE extension | [Unnamed] Bob Royal |
| 1BC/3HI extension | [Unnamed] Bob Royal, Maximus, Fourteen, Sixteen, Eighteen, Twenty, Twenty-two, Twenty-four |
| 1BC/3FG extension | [Unnamed] Bob Royal, Maximus, Fourteen, Sixteen, Eighteen, Twenty, Twenty-two, Twenty-four |
| 1BC/3FGHI extension | [Unnamed] Bob Maximus, Sixteen, Twenty, Twenty-four |
| 1BC/1DEFG extension | [Unnamed] Bob Maximus, [Unnamed] Differential Bob Sixteen, [Unnamed] Bob Twenty, Twenty-four |
| 1BC/3DEFGHI extension | [Unnamed] Bob Fourteen, Twenty |
| 1ABCD/1EFGH extension | [Unnamed] Bob Maximus |
| Collection | Page | Reference |
|---|---|---|
| Ringing World (2004) | 572 |