| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | how come [pron] [vb past] [pers pn] | 8 |
|
| 2 | [Wh adv] come [pers pn] [vb past] [pers pn] | 8 |
|
| 3 | [Wh adv] come [pron] [vb past] [pers pn] | 8 |
|
