| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] happened to | 92 |
|
| 2 | about [pron] [verb] to | 91 |
|
| 3 | about [pron] happened [prep] | 50 |
|
| 4 | about [pron] happen to | 37 |
|
| 5 | about [pron] [vb past] to | 35 |
|
