| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [verb] | 52165 |
|
| 2 | [prep] [pron] [vb past] | 13060 |
|
| 3 | [prep] [pron] happen | 917 |
|
| 4 | [prep] [pron] happened | 534 |
|
