| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why have n't i | 21 |
|
| 2 | why have not i | 21 |
|
| 3 | why have not i | 21 |
|
| 4 | why had not i | 11 |
|
| 5 | why have not i | 10 |
|
