| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [noun sg] have a duty | 70 |
|
| 2 | [noun] has a duty | 51 |
|
| 3 | [noun pl] have a duty | 50 |
|
| 4 | [noun] have a duty | 49 |
|
| 5 | [noun] had a duty | 26 |
|
| 6 | authority have a duty | 23 |
|
| 7 | authorities have a duty | 16 |
|
| 8 | authority have a duty | 7 |
|
| 9 | government have a duty | 7 |
|
| 10 | government have a duty | 7 |
|
| 11 | [noun prp] have a duty | 7 |
|
| 12 | state have a duty | 6 |
|
| 13 | state have a duty | 6 |
|
| 14 | council have a duty | 5 |
|
| 15 | company have a duty | 5 |
|
