| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | so why do n't they | 7 |
|
| 2 | so why do [adv] they | 7 |
|
| 3 | so why do [not/n't] they | 7 |
|
| 4 | so why do not they | 7 |
|
| 5 | so why do they [verb] | 11 |
|
| 6 | so why do they [vb infin] | 11 |
|
