| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] happen to | 2077 |
|
| 2 | [pron] [adv] to | 1588 |
|
| 3 | [pron] [adv] happen | 948 |
|
| 4 | [adv] happen to | 394 |
|
