| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why have n't they [verb] | 13 |
|
| 2 | [Wh adv] have n't they [vb pp] | 13 |
|
| 3 | [Wh adv] have n't they [verb] | 13 |
|
| 4 | [Wh adv] have n't they [verb] | 7 |
|
| 5 | [Wh adv] had n't they [verb] | 6 |
|
| 6 | [Wh adv] have n't they get | 5 |
|
| 7 | [Wh adv] have n't they got | 5 |
|
