| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be his duty [verb] | 26 |
|
| 2 | [pron] be his duty [verb] | 26 |
|
| 3 | it be his duty [verb] | 26 |
|
| 4 | [pers pn] be his duty [verb] | 26 |
|
| 5 | be his [adj] duty [verb] | 8 |
|
| 6 | be his [adj] duty [verb] | 8 |
|
| 7 | be his duty [verb] [art] | 8 |
|
| 8 | be his duty [verb] [art] | 8 |
|
| 9 | be his duty [verb] [prep] | 6 |
|
| 10 | be his duty [verb] [prep] | 6 |
|
| 11 | be his duty [verb] the | 5 |
|
| 12 | be his duty [verb] [pron] | 5 |
|
| 13 | be his duty [verb] the | 5 |
|
