| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] n't he [verb] [det] | 7 |
|
| 2 | [Wh adv] [vb past] n't he [vb infin] [det] | 6 |
|
| 3 | [Wh adv] did n't he [verb] [det] | 6 |
|
