| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [vb pp] [adv] | 669 |
|
| 2 | have been [vb pp] [adv] for | 467 |
|
| 3 | it have been [vb pp] for | 172 |
|
| 4 | it have been [adv] for | 36 |
|
| 5 | it have [vb pp] [adv] for | 30 |
|
