| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [vb infin] | 45138 |
|
| 2 | [adv] [pron] [vb infin] | 7697 |
|
| 3 | [adv] [pron] could | 6409 |
|
| 4 | [adv] could [vb infin] | 661 |
|
