| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [adv] [verb] [prep] | 3668 |
|
| 2 | could [adv] [verb] [prep] | 3667 |
|
| 3 | [modal v] [adv] [verb] for | 2021 |
|
| 4 | could [adv] [verb] for | 352 |
|
