| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [verb] [noun] | 525 |
|
| 2 | [vb infin] [verb] at [noun] | 229 |
|
| 3 | could [verb] at [noun] | 87 |
|
| 4 | could [vb infin] at [noun] | 86 |
|
| 5 | could [vb infin] [verb] at | 69 |
|
