| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [been] [verb] for [det] | 568 |
|
| 2 | could have [been] [verb] for | 69 |
|
| 3 | could have [verb] for [det] | 10 |
|
| 4 | could have [been] [verb] [det] | 9 |
|
