| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] [Wh det] [pron] be | 1546 |
|
| 2 | [Wh det] [pron] need be | 153 |
|
| 3 | [vb base] [Wh det] [pron] need | 52 |
|
