| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did [pers pn] not [verb] | 55 |
|
| 2 | why did [pers pn] not [vb infin] | 55 |
|
| 3 | why did [pers pn] not do | 5 |
|
| 4 | why did [pers pn] not do | 5 |
|
