| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [vb -s] been [vb pp] to be | 282 |
|
| 2 | has [been] [vb pp] to be | 281 |
|
| 3 | [vb -s] [been] [vb pp] to be | 280 |
|
| 4 | [vb -s] [been] shown to be | 100 |
|
| 5 | [vb -s] [been] found to be | 54 |
|
| 6 | [vb -s] [been] reported to be | 15 |
|
| 7 | [vb -s] [been] held to be | 14 |
|
| 8 | [vb -s] [been] designed to be | 11 |
|
| 9 | [vb -s] [been] said to be | 8 |
|
| 10 | [vb -s] [been] proved to be | 7 |
|
| 11 | [vb -s] [been] known to be | 6 |
|
| 12 | [vb -s] [been] assumed to be | 6 |
|
| 13 | [vb -s] [been] considered to be | 5 |
|
| 14 | [vb -s] [been] seen to be | 5 |
|
