| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't [pron] come [adv] | 58 |
|
| 2 | why [verb] n't [pron] [verb] back | 27 |
|
| 3 | why [verb] n't [pron] [vb infin] back | 27 |
|
| 4 | [adv] [verb] n't [pron] come back | 9 |
|
| 5 | why [verb] [not/n't] [pron] come back | 9 |
|
| 6 | [Wh adv] [verb] n't [pron] come back | 9 |
|
| 7 | why [verb] [adv] [pron] come back | 9 |
|
| 8 | why [verb] n't [pron] come back | 9 |
|
| 9 | why [verb] n't [pron] come back | 9 |
|
| 10 | why [verb] not [pron] come back | 9 |
|
