| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh adv] [vb past] i [vb infin] [to-vb] | 12 |
|
| 2 | [Wh adv] did i [vb infin] [to-vb] | 12 |
|
| 3 | why [vb past] i [vb infin] [to-vb] | 11 |
|
| 4 | [Wh adv] [vb past] i have [to-vb] | 9 |
|
