| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [to-vb] [pron] to | 272 |
|
| 2 | [vb infin] [pron] happened to | 64 |
|
| 3 | [to-vb] [pron] happened to | 27 |
|
| 4 | [vb infin] [to-vb] [pron] happened | 18 |
|
