| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did they [verb] [pron] [prep] | 6 |
|
| 2 | why did they [vb infin] [pron] [prep] | 6 |
|
| 3 | why did they [verb] [pers pn] [prep] | 6 |
|
