| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] [vb past] what [pron] | 263 |
|
| 2 | [adv] [vb past] [pron] could | 164 |
|
| 3 | [vb past] what [pron] could | 109 |
|
| 4 | [adv] what [pron] could | 57 |
|
| 5 | [adv] [vb past] what could | 5 |
|
