| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be his [noun] [prep] | 737 |
|
| 2 | be his [noun sg] [prep] | 663 |
|
| 3 | be [pos pn] duty [prep] | 24 |
|
| 4 | be [pron] duty [prep] | 24 |
|
| 5 | [be] his duty [prep] | 6 |
|
| 6 | be his duty [prep] | 6 |
|
| 7 | be his duty [prep] | 6 |
|
