| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why have we [vb pp] [verb] | 5 |
|
| 2 | why [vb base] we [vb pp] [to-vb] | 5 |
|
| 3 | why [vb base] we [vb pp] [verb] | 5 |
|
| 4 | why [vb base] we [vb pp] [verb] | 5 |
|
