| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] an [noun] | 307 |
|
| 2 | [vb infin] for an [noun] | 152 |
|
| 3 | could [vb infin] for [noun] | 148 |
|
| 4 | could [vb infin] for an | 13 |
|
