| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [vb infin] | 45138 |
|
| 2 | [pron] [vb infin] [pron] | 28098 |
|
| 3 | could [vb infin] [pron] | 12148 |
|
| 4 | [pron] could [pron] | 590 |
|
