| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [Wh det] | 57081 |
|
| 2 | [to-vb] [Wh det] | 10634 |
|
| 3 | understand [Wh det] | 1178 |
|
| 4 | to understand [pron] | 838 |
|
