| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb mod] [be] [vb pp] for that purpose | 5 |
|
| 2 | [modal v] [be] [vb pp] for that purpose | 5 |
|
| 3 | [be] [vb pp] [adv] for that purpose | 5 |
|
