| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [vb infin] [vb pp] [art] | 844 |
|
| 2 | could [vb infin] in [art] | 498 |
|
| 3 | [vb infin] [vb pp] in [art] | 492 |
|
| 4 | could [vb infin] [vb pp] in | 116 |
|
