| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] previously [be] [vb pp] to be | 13 |
|
| 2 | have previously [be] [vb pp] to be | 13 |
|
| 3 | [verb] previously been [vb pp] to be | 13 |
|
| 4 | [verb] previously [been] [vb pp] to be | 13 |
|
| 5 | [verb] previously be [vb pp] to be | 13 |
|
| 6 | [vb -s] previously [be] [vb pp] to be | 10 |
|
| 7 | has previously [be] [vb pp] to be | 10 |
|
| 8 | [verb] previously [be] shown to be | 8 |
|
