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