| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have a duty [to-vb] | 198 |
|
| 2 | have a duty [verb] | 76 |
|
| 3 | has a duty [verb] | 61 |
|
| 4 | had a duty [verb] | 44 |
|
| 5 | have a duty provide | 22 |
|
| 6 | have a duty to provide | 22 |
|
| 7 | have a duty [verb] | 14 |
|
| 8 | have a duty to act | 8 |
|
| 9 | have a duty act | 8 |
|
| 10 | have a duty to consider | 6 |
|
| 11 | have a duty consider | 6 |
|
| 12 | have a duty to make | 6 |
|
| 13 | have a duty make | 6 |
|
| 14 | have a duty support | 6 |
|
| 15 | have a duty inform | 6 |
|
| 16 | have a duty to support | 6 |
|
| 17 | have a duty to inform | 6 |
|
| 18 | have a duty protect | 5 |
|
| 19 | have a duty promote | 5 |
|
| 20 | have a duty to promote | 5 |
|
| 21 | have a duty to report | 5 |
|
| 22 | have a duty to protect | 5 |
|
| 23 | have a duty do | 5 |
|
| 24 | have a duty report | 5 |
|
| 25 | have a duty to do | 5 |
|
