| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [coord] [pron] happen [prep] | 176 |
|
| 2 | [coord] [no cls] [pron] [prep] | 34 |
|
| 3 | [no cls] [pron] happen [prep] | 23 |
|
| 4 | [coord] [no cls] [pron] happen | 13 |
|
