| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] be to be | 856 |
|
| 2 | be require to be | 134 |
|
| 3 | [Wh det] be require to | 15 |
|
| 4 | [Wh det] require to be | 8 |
|
