| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [adv] been [verb] to be | 21 |
|
| 2 | have [adv] been [vb pp] to be | 21 |
|
| 3 | have [adv] been show to be | 8 |
|
| 4 | have [adv] been shown to be | 8 |
|
| 5 | have recently been [verb] to be | 6 |
|
