| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [noun] [pron] be [verb] | 747 |
|
| 2 | [pron] duty [pron] be [verb] | 12 |
|
| 3 | [Wh det] duty [pron] [be] [verb] | 10 |
|
