| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't [pers pn] go back | 16 |
|
| 2 | why [verb] n't [pron] go back | 16 |
|
| 3 | why do n't [pron] go back | 16 |
|
| 4 | why [verb] n't you go back | 12 |
|
| 5 | why [verb] n't you go back | 12 |
|
| 6 | why do n't [pron] go back | 12 |
|
| 7 | why [vb base] n't [pron] go back | 12 |
|
