| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what [vb past] [pron] [verb] | 2986 |
|
| 2 | what [vb past] [pron] [vb infin] | 2752 |
|
| 3 | what [verb] [pron] do | 1312 |
|
| 4 | what [vb past] [pron] do | 600 |
|
| 5 | [pron] [vb past] [pron] do | 581 |
|
