| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | local authority have a duty | 15 |
|
| 2 | local [noun] have a duty | 15 |
|
| 3 | local [noun] have a duty | 15 |
|
| 4 | local [noun pl] have a duty | 12 |
|
| 5 | local authorities have a duty | 12 |
|
| 6 | local [noun] have a duty | 10 |
|
