| Answer | Crossword Clue |
|---|---|
| OISE | Belgium-to-France river |
| YSER | River through France and Belgium |
| YSER | River of France and Belgium |
| YSER | River in France and Belgium |
| OISE | River of Belgium and France. |
| SEMOIS | River in Belgium and France. |
| YSER | River of France and Belgium. |
| OISE | River in France and Belgium. |
| YSER | River in France and Belgium. |
| YSER | River through France and Belgium. |
| LYS | River in France and Belgium. |
| LYS | River of France and Belgium. |
| OISE | River from Belgium to France. |
| LYS | River of France and Belgium |
| OISE | River from Belgium to France |
| YSER | River in N. France and Belgium. |
| YSER | River of northern France and Belgium |
