| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | why did i [vb infin] | 84 |
|
| 2 | why [vb past] i [vb infin] | 84 |
|
| 3 | why [vb past] i do | 14 |
|
| 4 | why [vb past] i have | 11 |
|
| 5 | why [vb past] i come | 5 |
|
| 6 | why [vb past] i think | 5 |
|
