| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did [pron] [adv] | 112 |
|
| 2 | why [verb] they [adv] | 44 |
|
| 3 | why do they [adv] | 33 |
|
| 4 | [adv] did they [adv] | 29 |
|
| 5 | why [vb past] they [adv] | 19 |
|
