| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | could [verb] been [verb] [prep] [det] | 43 |
|
| 2 | could [verb] been [verb] [prep] [det] | 43 |
|
| 3 | [modal v] [verb] been [verb] for [det] | 26 |
|
| 4 | could [verb] been [verb] for [adj] | 8 |
|
| 5 | could [verb] [be] [verb] for [det] | 6 |
|
| 6 | could [verb] be [verb] for [det] | 6 |
|
| 7 | could [verb] [been] [verb] for [det] | 5 |
|
| 8 | could [verb] been [verb] for [det] | 5 |
|
