| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [adv] been [vb pp] to be | 105 |
|
| 2 | [adv] been shown to be | 37 |
|
| 3 | [adv] been show to be | 37 |
|
| 4 | [adv] been found to be | 19 |
|
| 5 | [adv] been find to be | 19 |
|
| 6 | previously been [verb] to be | 14 |
|
| 7 | also been [verb] to be | 11 |
|
| 8 | recently been [verb] to be | 10 |
|
| 9 | [adv] been considered to be | 8 |
|
| 10 | [adv] been consider to be | 8 |
|
| 11 | generally been [verb] to be | 5 |
|
| 12 | never been [verb] to be | 5 |
|
| 13 | already been [verb] to be | 5 |
|
