| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [adv] [vb infin] | 85247 |
|
| 2 | [vb mod] [adv] [vb infin] | 85247 |
|
| 3 | could [adv] [vb infin] | 32770 |
|
| 4 | could [adv] [verb] | 11478 |
|
| 5 | could [adv] [vb infin] | 11432 |
|
