| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it have been [verb] [prep] | 1975 |
|
| 2 | as have been [verb] [prep] | 211 |
|
| 3 | as it have [verb] [prep] | 118 |
|
| 4 | as it have been [prep] | 107 |
|
| 5 | as it have been [verb] | 104 |
|
