| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | at [adv] [modal v] | 96 |
|
| 2 | [prep] [adv] could | 23 |
|
| 3 | [prep] [adv] could | 23 |
|
| 4 | at [adv] could | 7 |
|
| 5 | at [adv] could | 7 |
|
