| Relationship | Method(s) |
|---|---|
| 1AB/1CD extension | [Unnamed] Differential Bob Triples, [Unnamed] Bob Caters, Cinques, [Unnamed] Differential Bob Sextuples, [Unnamed] Bob Septuples, Octuples, [Unnamed] Differential Bob Nonuples, [Unnamed] Bob Decuples, Twenty-three |
| 1BC/1DE extension | [Unnamed] Bob Triples, Caters, Cinques, Sextuples, Septuples, Octuples, Nonuples, Decuples, Twenty-three |
| 1BC/1CDEF extension | [Unnamed] Bob Caters, Sextuples, Octuples, Decuples |
| 1BC/3EF extension | [Unnamed] Bob Cinques, Octuples, Twenty-three |
| Collection | Page | Reference |
|---|---|---|
| Ringing World (1970) | 418 |