| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | but it have been [vb pp] that | 27 |
|
| 2 | but it [vb -s] been [vb pp] that | 25 |
|
| 3 | but it has been [vb pp] that | 23 |
|
| 4 | but it [verb] been held that | 5 |
|
