| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] it [modal v] [vb infin] | 659 |
|
| 2 | [to-vb] [Wh det] [modal v] [vb infin] | 172 |
|
| 3 | [to-vb] it [modal v] [vb infin] | 97 |
|
| 4 | [to-vb] [Wh det] it [modal v] | 70 |
|
