| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do we [vb infin] [noun] | 26 |
|
| 2 | why do we [vb infin] [noun pl] | 12 |
|
| 3 | why do we [vb infin] [noun sg] | 11 |
|
| 4 | why do we have [noun] | 6 |
|
| 5 | why do we need [noun] | 5 |
|
