| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] they [adv] | 18 |
|
| 2 | why did they [adv] | 15 |
|
| 3 | why [vb past] they not | 12 |
|
| 4 | why [vb past] they [not/n't] | 12 |
|
| 5 | why [vb past] they not | 12 |
|
| 6 | why [vb past] they [adv] | 6 |
|
