| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do [not/n't] [pron] come [adv] | 46 |
|
| 2 | why do [not/n't] [pron] [verb] back | 20 |
|
| 3 | why do [not/n't] [pron] come back | 9 |
|
| 4 | why [verb] [not/n't] [pron] come back | 9 |
|
| 5 | [adv] do [not/n't] [pron] come back | 6 |
|
| 6 | why [vb base] [not/n't] [pron] come back | 6 |
|
| 7 | why do [adv] [pron] come back | 6 |
|
