| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [pron] happened to | 214 |
|
| 2 | know [pron] [verb] to | 81 |
|
| 3 | know [pron] happened to | 69 |
|
| 4 | [vb infin] [pron] happened to | 64 |
|
| 5 | know [pron] [vb past] to | 52 |
|
| 6 | know [pron] happened [prep] | 46 |
|
| 7 | know [pron] happen to | 42 |
|
