| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] n't he [verb] [adv] | 6 |
|
| 2 | why did not he [verb] [adv] | 5 |
|
| 3 | why [vb past] not he [vb infin] [adv] | 5 |
|
