| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | and it be [pron] duty [to-vb] | 7 |
|
| 2 | and it be [pos pn] duty [to-vb] | 7 |
|
| 3 | and it be [pron] duty [to-vb] | 7 |
|
| 4 | and it is [pron] duty [to-vb] | 5 |
|
