| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] n't he tell | 6 |
|
| 2 | why [vb past] [not/n't] he tell | 6 |
|
| 3 | why did [adv] he tell | 6 |
|
| 4 | why [vb past] not he tell | 6 |
|
