| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [conj] has been [vb pp] to be | 14 |
|
| 2 | [coord] has [been] [vb pp] to be | 8 |
|
| 3 | that has [been] [vb pp] to be | 6 |
|
| 4 | [conj] has [been] shown to be | 6 |
|
| 5 | [that] has [been] [vb pp] to be | 6 |
|
| 6 | that has [been] [vb pp] to be | 6 |
|
| 7 | and has [been] [vb pp] to be | 5 |
|
| 8 | and has [been] [vb pp] to be | 5 |
|
