| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] has occurred | 11 |
|
| 2 | [prep] [pron] has occurred | 11 |
|
| 3 | [prep] what has occurred | 10 |
|
| 4 | [prep] what has occurred | 10 |
|
| 5 | of [pron] has occurred | 5 |
|
| 6 | of [pron] has occurred | 5 |
|
