| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did [not/n't] they [vb infin] [pers pn] | 16 |
|
| 2 | why did [adv] they [vb infin] [pers pn] | 16 |
|
| 3 | why did n't they [vb infin] [pers pn] | 16 |
|
| 4 | why did not they [vb infin] [pers pn] | 16 |
|
| 5 | why did they [vb infin] [pers pn] [prep] | 6 |
|
| 6 | why did they [vb infin] [pers pn] [prep] | 6 |
|
| 7 | why did they [vb infin] [pers pn] [adv] | 5 |
|
