| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | who [vb past] n't [verb] [det] | 21 |
|
| 2 | [Wh pn] [vb past] n't [vb infin] [det] | 17 |
|
| 3 | [Wh pn] did n't [verb] [det] | 17 |
|
| 4 | [Wh pn] [vb past] n't have [det] | 5 |
|
