| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] know [Wh det] [verb] happen to | 7 |
|
| 2 | [pers pn] know [pron] [verb] happen to | 7 |
|
| 3 | [pers pn] know [pron] [verb] happened to | 7 |
|
| 4 | [pers pn] know what [verb] happen to | 7 |
|
| 5 | [pers pn] know [pron] have happen to | 7 |
|
| 6 | [pers pn] know what [verb] happen to | 7 |
|
