| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun] have a duty | 129 |
|
| 2 | [noun sg] have a duty | 70 |
|
| 3 | authority have a duty | 23 |
|
| 4 | authority have a [noun] | 18 |
|
| 5 | authority have a [noun sg] | 18 |
|
| 6 | authority have [art] duty | 10 |
|
| 7 | authority have [art] duty | 10 |
|
| 8 | authority [verb] a duty | 8 |
|
| 9 | authority have a duty | 7 |
|
| 10 | authority have a duty | 7 |
|
