| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb infin] [adv] and [verb] | 3266 |
|
| 2 | could [vb infin] and [verb] | 541 |
|
| 3 | could [vb infin] [adv] [verb] | 397 |
|
| 4 | could [vb infin] [adv] and | 360 |
|
| 5 | could [adv] and [verb] | 6 |
|
