| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't [pron] | 2510 |
|
| 2 | why do n't [pron] | 2340 |
|
| 3 | [adv] did n't [pron] | 1074 |
|
| 4 | why [vb past] n't [pron] | 757 |
|
| 5 | why did not [pron] | 681 |
|
| 6 | why did [adv] [pron] | 681 |
|
| 7 | why did [not/n't] [pron] | 681 |
|
