| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb past] what [vb past] [prep] | 165 |
|
| 2 | [adv] what [vb past] [prep] | 100 |
|
| 3 | [adv] [vb past] what [vb past] | 57 |
|
| 4 | [adv] [vb past] [vb past] [prep] | 22 |
|
