| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] could [vb infin] [art] | 494 |
|
| 2 | [conj] [vb infin] at [art] | 163 |
|
| 3 | could [vb infin] at [art] | 114 |
|
| 4 | [conj] could [vb infin] at | 18 |
|
