| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [vb pp] [adv] that | 13 |
|
| 2 | [pers pn] have been [vb pp] [adv] that | 12 |
|
| 3 | [pers pn] has been [vb pp] [adv] that | 10 |
|
