| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [vb infin] | 45138 |
|
| 2 | [pron] [vb infin] [pers pn] | 19715 |
|
| 3 | could [vb infin] [pers pn] | 7007 |
|
| 4 | [pron] could [pers pn] | 543 |
|
