| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [pron] [vb past] [pers pn] | 464 |
|
| 2 | know why [pron] [vb past] | 146 |
|
| 3 | know [pron] [vb past] [pers pn] | 101 |
|
