| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [adv] [vb infin] | 21164 |
|
| 2 | could [adv] [adv] [vb infin] | 2430 |
|
| 3 | [pron] could [adv] [adv] | 2010 |
|
| 4 | [pron] [adv] [adv] [vb infin] | 236 |
|
