| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [pron] [to-vb] | 3993 |
|
| 2 | [pron] how [to-vb] | 660 |
|
| 3 | [to-vb] how [to-vb] | 508 |
|
| 4 | [to-vb] [pron] how | 312 |
|
