| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [pron] did | 394 |
|
| 2 | why it [verb] | 372 |
|
| 3 | [adv] it did | 299 |
|
| 4 | why it [vb past] | 157 |
|
| 5 | why it do | 33 |
|
| 6 | [Wh adv] it did | 30 |
|
| 7 | why it did | 14 |
|
