| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did not [pron] [vb infin] | 606 |
|
| 2 | did not [pron] [adv] [vb infin] | 100 |
|
| 3 | why did [pron] [adv] [vb infin] | 46 |
|
| 4 | why did not [pron] [adv] | 42 |
|
