| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [is] to be done | 72 |
|
| 2 | what [is] to be done | 70 |
|
| 3 | [Wh det] is to be done | 55 |
|
| 4 | [Wh det] 's to be done | 17 |
|
