| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] how it can [be] [verb] | 5 |
|
| 2 | [to-vb] [Wh adv] it can be [verb] | 5 |
|
| 3 | [to-vb] [Wh adv] it can [be] [vb pp] | 5 |
|
