| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] did [pron] [vb infin] | 4519 |
|
| 2 | why [verb] [pron] [vb infin] | 2719 |
|
| 3 | why do [pron] [vb infin] | 2710 |
|
| 4 | why did [pron] [verb] | 1161 |
|
| 5 | why [vb past] [pron] [vb infin] | 1160 |
|
