| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did n't [pron] send | 8 |
|
| 2 | why did [not/n't] [pron] send | 8 |
|
| 3 | why did [adv] [pers pn] send | 8 |
|
| 4 | why did not [pron] send | 8 |
|
| 5 | why did [adv] [pron] send | 8 |
|
| 6 | why did [adv] you send | 6 |
|
| 7 | why did [adv] you send | 6 |
|
