| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why do we [verb] | 185 |
|
| 2 | why do [pron] use | 13 |
|
| 3 | [adv] do we use | 10 |
|
| 4 | [Wh adv] do we use | 8 |
|
| 5 | why [verb] we use | 6 |
|
| 6 | why do we use | 6 |
|
