| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why does n't [pers pn] | 92 |
|
| 2 | why [vb -s] n't he | 59 |
|
| 3 | why [vb -s] n't she | 25 |
|
| 4 | why [vb -s] n't it | 18 |
|
| 5 | why has n't [pers pn] | 10 |
|
