| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [verb] do n't they | 14 |
|
| 2 | [verb] [verb] do n't they | 13 |
|
| 3 | [verb] [vb infin] do n't they | 5 |
|
| 4 | do [verb] do n't they | 5 |
|
