| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | did [not/n't] [vb infin] | 57468 |
|
| 2 | did they [vb infin] | 1236 |
|
| 3 | did [not/n't] they | 502 |
|
| 4 | [not/n't] they [vb infin] | 465 |
|
