| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [verb] [adv] | 4639 |
|
| 2 | [pron] [verb] a [adv] | 4595 |
|
| 3 | [pron] could [verb] a | 2934 |
|
| 4 | could [verb] a [adv] | 164 |
|
