| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] why did [adv] he [vb infin] | 9 |
|
| 2 | [adv] why [vb past] [not/n't] he [vb infin] | 9 |
|
| 3 | [adv] why [vb past] not he [vb infin] | 9 |
|
| 4 | [adv] why [vb past] n't he [vb infin] | 9 |
|
