| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] it could [not/n't] [vb infin] | 9 |
|
| 2 | [Wh det] it could not [vb infin] | 9 |
|
| 3 | which it could [not/n't] [vb infin] | 5 |
|
