| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] did [pron] [verb] | 4568 |
|
| 2 | [Wh adv] did [pron] [verb] | 3722 |
|
| 3 | why [verb] [pron] [verb] | 3173 |
|
| 4 | why do [pron] [verb] | 2725 |
|
| 5 | why [vb past] [pron] [verb] | 1304 |
|
| 6 | why did [pron] [verb] | 1161 |
|
