| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [prep] [Wh det] are [vb pp] to be | 25 |
|
| 2 | of [Wh det] [am/are] [vb pp] to be | 16 |
|
| 3 | [prep] which [am/are] [vb pp] to be | 12 |
|
| 4 | [prep] what [am/are] [vb pp] to be | 12 |
|
| 5 | [prep] [Wh det] [am/are] known to be | 5 |
|
