| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [vb pp] the | 495 |
|
| 2 | [vb infin] [vb pp] at the | 118 |
|
| 3 | could [vb infin] at the | 85 |
|
| 4 | could [vb infin] [vb pp] at | 51 |
|
