| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [pron] [adv] | 32780 |
|
| 2 | [pron] [adv] happen | 948 |
|
| 3 | [prep] [pron] happen | 917 |
|
| 4 | [prep] [adv] happen | 9 |
|
