| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [v-ing] [pron] to | 915 |
|
| 2 | [prep] [pron] happen to | 170 |
|
| 3 | [prep] [v-ing] [pron] happen | 38 |
|
| 4 | [v-ing] [pron] happen to | 17 |
|
