| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | have [be] [vb pp] by [det] | 594 |
|
| 2 | could have [be] [vb pp] by | 131 |
|
| 3 | could [be] [vb pp] by [det] | 57 |
|
| 4 | could have [be] [vb pp] [det] | 7 |
|
