| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [verb] [prep] [adj] | 10037 |
|
| 2 | could have been [verb] [prep] | 541 |
|
| 3 | could have [verb] [prep] [adj] | 177 |
|
| 4 | could have been [prep] [adj] | 30 |
|
| 5 | could have been [verb] [adj] | 29 |
|
