| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did not [pron] [verb] | 608 |
|
| 2 | why did not [pron] [vb infin] | 606 |
|
| 3 | why [verb] not [pron] send | 13 |
|
| 4 | why do not [pron] send | 13 |
|
| 5 | [adv] did not [pron] send | 9 |
|
| 6 | why [vb past] not [pron] send | 8 |
|
| 7 | why did [adv] [pron] send | 8 |
|
| 8 | why did not [pron] send | 8 |
|
