| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] why have not | 22 |
|
| 2 | [adv] why have n't | 22 |
|
| 3 | [adv] why have not | 12 |
|
| 4 | so why have not | 11 |
|
| 5 | so why have not | 11 |
|
| 6 | [adv] why has not | 5 |
|
| 7 | [adv] why had not | 5 |
|
| 8 | then why have not | 5 |
|
| 9 | then why have not | 5 |
|
