| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do n't we [vb infin] | 272 |
|
| 2 | why do n't we | 241 |
|
| 3 | why do we [vb infin] | 184 |
|
| 4 | why do n't [vb infin] | 19 |
|
