| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] [prep] [pron] to | 139 |
|
| 2 | [prep] [pron] happened to | 92 |
|
| 3 | [to-vb] [pron] happened to | 27 |
|
| 4 | [to-vb] [prep] [pron] happened | 17 |
|
