| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] did n't you write | 6 |
|
| 2 | why [vb past] n't you write | 5 |
|
| 3 | [Wh adv] [vb past] n't you write | 5 |
|
| 4 | why [vb past] n't you write | 5 |
|
