| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why [vb past] he [verb] [to-vb] | 35 |
|
| 2 | why [vb past] he [vb infin] [to-vb] | 30 |
|
| 3 | why did he [verb] [to-vb] | 30 |
|
| 4 | why [vb past] he have [to-vb] | 18 |
|
| 5 | why [vb past] he have [to-vb] | 18 |
|
| 6 | why [vb past] he choose [to-vb] | 5 |
|
| 7 | why had he [verb] [to-vb] | 5 |
|
