| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [verb] n't they | 159 |
|
| 2 | why [verb] not they | 159 |
|
| 3 | why do not they | 143 |
|
| 4 | why [vb base] not they | 101 |
|
| 5 | why do not they | 92 |
|
| 6 | why [vb past] not they | 58 |
|
| 7 | why did not they | 51 |
|
| 8 | why have not they | 16 |
|
| 9 | why have not they | 9 |
|
| 10 | why had not they | 7 |
|
