| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did you [verb] | 599 |
|
| 2 | why did you [vb infin] | 599 |
|
| 3 | [adv] did you decide | 15 |
|
| 4 | [Wh adv] did you decide | 14 |
|
| 5 | why did [pron] decide | 12 |
|
| 6 | why did [pers pn] decide | 12 |
|
| 7 | why [verb] you decide | 9 |
|
| 8 | why did you decide | 9 |
|
| 9 | why did you decide | 9 |
|
| 10 | why [vb past] you decide | 9 |
|
| 11 | why do you decide | 9 |
|
| 12 | why did you decide | 9 |
|
