| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] at a | 29 |
|
| 2 | could [verb] at a | 29 |
|
| 3 | could [verb] at a | 27 |
|
| 4 | could look at a | 5 |
|
| 5 | could look at a | 5 |
|
