| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [verb] [been] confirmed by a | 9 |
|
| 2 | have [been] confirmed by a | 9 |
|
| 3 | had [been] confirmed by a | 5 |
|
| 4 | [vb past] [been] confirmed by a | 5 |
|
| 5 | [been] confirmed by a [adj] | 5 |
|
| 6 | [been] confirmed by a [adj] | 5 |
|
