| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | which need to be | 268 |
|
| 2 | [Wh det] needs to be | 187 |
|
| 3 | [Wh det] need to be | 155 |
|
| 4 | what need to be | 128 |
|
| 5 | [Wh det] needed to be | 58 |
|
