| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [adv] [adv] a | 1489 |
|
| 2 | could [verb] [adv] [adv] | 813 |
|
| 3 | could [verb] [adv] a | 287 |
|
| 4 | could [verb] [adv] a | 98 |
|
