| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb base] been [vb pp] to be | 182 |
|
| 2 | [vb base] been [vb pp] to be | 182 |
|
| 3 | [vb base] been [vb pp] [prep] be | 182 |
|
| 4 | have been [vb pp] [prep] be | 180 |
|
| 5 | [vb base] been shown [prep] be | 62 |
|
| 6 | [vb base] been found [prep] be | 47 |
|
| 7 | [vb base] been held [prep] be | 10 |
|
| 8 | [vb base] been reported [prep] be | 7 |
|
| 9 | [vb base] been proved [prep] be | 5 |
|
