| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | duty [to-vb] [prep] the | 64 |
|
| 2 | 's duty [to-vb] the | 15 |
|
| 3 | 's duty [to-vb] [prep] | 14 |
|
| 4 | 's duty [prep] the | 12 |
|
