| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it has been [verb] that | 23 |
|
| 2 | but it has be [vb pp] that | 23 |
|
| 3 | but it has be held that | 5 |
|
| 4 | but it has be hold that | 5 |
|
