| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it can be [vb pp] to be | 28 |
|
| 2 | it can [be] [vb pp] to be | 28 |
|
| 3 | it can [be] shown to be | 9 |
|
| 4 | it can [be] said to be | 6 |
|
| 5 | it can [be] seen to be | 5 |
|
