| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] [pron] [adv] | 1456 |
|
| 2 | [verb] [pron] know [adv] | 837 |
|
| 3 | could [verb] [pron] know | 42 |
|
| 4 | could [pron] know [adv] | 5 |
|
