| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do we [vb infin] [pers pn] | 15 |
|
| 2 | why [vb base] we [vb infin] [pers pn] | 15 |
|
| 3 | why [vb base] we [vb infin] it | 10 |
|
| 4 | why [vb base] we do [pers pn] | 7 |
|
