| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [to-vb] what [pers pn] [modal v] | 417 |
|
| 2 | [to-vb] what [pers pn] [vb mod] | 417 |
|
| 3 | [verb] what [pers pn] could | 334 |
|
| 4 | [to-vb] [pron] [pers pn] could | 142 |
|
| 5 | [to-vb] what [pron] could | 87 |
|
| 6 | [to-vb] what [pers pn] could | 87 |
|
