| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could [verb] | 40222 |
|
| 2 | [Wh adv] [pers pn] [verb] | 34251 |
|
| 3 | [Wh adv] [pers pn] could | 1275 |
|
| 4 | [Wh adv] could [verb] | 9 |
|
