| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [verb] [prep] | 1975 |
|
| 2 | have been [verb] off [prep] | 195 |
|
| 3 | it have been [verb] off | 26 |
|
| 4 | it have [verb] off [prep] | 15 |
|
