| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [Wh det] [vb base] been [vb pp] to be | 11 |
|
| 2 | [Wh det] [vb base] be [vb pp] to be | 11 |
|
| 3 | [Wh det] have be [vb pp] to be | 11 |
|
| 4 | which [vb base] be [vb pp] to be | 10 |
|
| 5 | [Wh det] [vb base] be shown to be | 6 |
|
