| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] a duty [to-vb] | 235 |
|
| 2 | have a duty [to-vb] | 198 |
|
| 3 | [prep] a duty [to-vb] | 134 |
|
| 4 | [prep] a duty [to-vb] | 134 |
|
| 5 | under a duty [to-vb] | 103 |
|
| 6 | under a duty [to-vb] | 103 |
|
| 7 | [vb base] a duty [to-vb] | 79 |
|
| 8 | have a duty [to-vb] | 75 |
|
| 9 | [vb -s] a duty [to-vb] | 70 |
|
| 10 | has a duty [to-vb] | 61 |
|
| 11 | [vb past] a duty [to-vb] | 49 |
|
| 12 | had a duty [to-vb] | 44 |
|
| 13 | [be] a duty [to-vb] | 30 |
|
| 14 | be a duty [to-vb] | 30 |
|
| 15 | [is] a duty [to-vb] | 24 |
|
| 16 | is a duty [to-vb] | 23 |
|
| 17 | [noun] a duty [to-vb] | 18 |
|
| 18 | [vb infin] a duty [to-vb] | 17 |
|
| 19 | have a duty [to-vb] | 13 |
|
| 20 | of a duty [to-vb] | 12 |
|
| 21 | of a duty [to-vb] | 12 |
|
| 22 | [vb pp] a duty [to-vb] | 11 |
|
| 23 | impose a duty [to-vb] | 9 |
|
| 24 | [noun sg] a duty [to-vb] | 9 |
|
| 25 | [conj] a duty [to-vb] | 9 |
|
| 26 | [coord] a duty [to-vb] | 8 |
|
| 27 | [noun pl] a duty [to-vb] | 8 |
|
| 28 | with a duty [to-vb] | 7 |
|
| 29 | with a duty [to-vb] | 7 |
|
| 30 | and a duty [to-vb] | 5 |
|
