| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [pers pn] could [vb infin] | 547 |
|
| 2 | how [pers pn] could [vb infin] | 326 |
|
| 3 | [vb infin] how [pers pn] could | 92 |
|
