| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | do [not/n't] [vb infin] | 92166 |
|
| 2 | why do [not/n't] | 1647 |
|
| 3 | why [not/n't] [vb infin] | 848 |
|
| 4 | why do [vb infin] | 14 |
|
