| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [pron] happened to | 54 |
|
| 2 | [is] [adv] [pron] happened | 39 |
|
| 3 | [is] [pron] happened to | 28 |
|
| 4 | [is] [adv] [pron] to | 25 |
|
