| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] a | 737 |
|
| 2 | [adv] [verb] [adv] a | 681 |
|
| 3 | could [adv] [verb] [adv] | 419 |
|
| 4 | could [verb] [adv] a | 98 |
|
