| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [vb infin] at the [noun] | 15 |
|
| 2 | could [adv] [vb infin] at the [noun sg] | 11 |
|
| 3 | could only [vb infin] at the [noun] | 8 |
|
