| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [verb] what [pron] [modal v] | 220 |
|
| 2 | [vb past] [adv] [verb] [pron] [pron] [modal v] | 103 |
|
| 3 | [vb past] [adv] [verb] [Wh det] [pron] [modal v] | 46 |
|
| 4 | [vb past] [adv] [verb] what [pron] [modal v] | 44 |
|
