| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] [pron] [vb infin] at [adj] | 5 |
|
| 2 | why did [pron] [vb infin] at [adj] | 5 |
|
| 3 | why [vb past] [pers pn] [vb infin] at [adj] | 5 |
|
| 4 | why [vb past] [pron] [vb infin] at [det] | 5 |
|
