| <?xml version="1.0" encoding="UTF-8"?><out xmlns:set="http://exslt.org/sets"> | |
| Containing i and no e: | |
| Paris; | |
| Madrid; | |
| Calais; | |
| Containing e and no i: | |
| Barcelona; | |
| Hannover; | |
| Containing B and no i and no e: | |
| Bonn; | |
| Containing i: | |
| Paris; | |
| Madrid; | |
| Vienna; | |
| Calais; | |
| Berlin; | |
| Containing B: | |
| Barcelona; | |
| Bonn; | |
| Berlin; | |
| Empty set: | |
| </out> |