| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [verb] a | 396 |
|
| 2 | and could [vb infin] [verb] | 101 |
|
| 3 | and could [vb infin] a | 57 |
|
| 4 | and could [verb] a | 57 |
|
| 5 | and [vb infin] [verb] a | 24 |
|
