| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have been [adj] [prep] [det] | 701 |
|
| 2 | could have been [adj] [prep] | 77 |
|
| 3 | could have been [prep] [det] | 21 |
|
| 4 | could have [adj] [prep] [det] | 6 |
|
