| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [that] have been [verb] | 3091 |
|
| 2 | could have been [verb] | 1153 |
|
| 3 | [that] could have [verb] | 101 |
|
| 4 | [that] could have been | 75 |
|
