| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [adv] what [vb past] | 15 |
|
| 2 | [prep] exactly [Wh det] [vb past] | 9 |
|
| 3 | of [adv] [Wh det] [vb past] | 8 |
|
| 4 | [prep] [adv] [Wh det] happened | 7 |
|
