| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [pron] [vb infin] | 3881 |
|
| 2 | [coord] could [vb infin] | 1225 |
|
| 3 | [coord] could [pron] | 363 |
|
| 4 | [coord] [pron] [vb infin] | 5 |
|
