| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pers pn] could [vb infin] [art] | 6641 |
|
| 2 | [pers pn] [vb infin] whether [art] | 28 |
|
| 3 | [pers pn] could [vb infin] whether | 22 |
|
| 4 | could [vb infin] whether [art] | 15 |
|
