| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [vb pp] [prep] | 1838 |
|
| 2 | have been [vb pp] off [prep] | 179 |
|
| 3 | it have been [vb pp] off | 22 |
|
| 4 | it have [vb pp] off [prep] | 15 |
|
