| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [pron] could [not/n't] [vb infin] at | 97 |
|
| 2 | [Wh pn] could [not/n't] [vb infin] [prep] | 36 |
|
| 3 | [Wh pn] could [not/n't] [vb infin] [prep] | 36 |
|
| 4 | [Wh pn] [vb mod] [not/n't] [vb infin] at | 15 |
|
| 5 | [Wh pn] [modal v] [not/n't] [vb infin] at | 15 |
|
| 6 | [Wh pn] could [adv] [vb infin] at | 6 |
|
| 7 | [Wh pn] could [not/n't] [vb infin] at | 5 |
|
| 8 | [Wh pn] could [not/n't] [verb] at | 5 |
|
| 9 | [Wh pn] could [not/n't] [vb infin] at | 5 |
|
