| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | what to do [prep] | 587 |
|
| 2 | [vb pp] to do [prep] | 304 |
|
| 3 | [vb pp] what to do | 55 |
|
| 4 | [vb pp] what [prep] | 19 |
|
