| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [conj] [verb] [art] | 110 |
|
| 2 | [vb infin] [conj] [verb] at [art] | 69 |
|
| 3 | could [vb infin] [conj] [verb] at | 20 |
|
| 4 | could [vb infin] [verb] at [art] | 19 |
|
