| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [vb mod] only be [vb pp] by | 24 |
|
| 2 | it [modal v] only be [vb pp] by | 24 |
|
| 3 | it can only be [vb pp] by | 13 |
|
| 4 | it can only be [vb pp] by | 13 |
|
| 5 | it could only be [vb pp] by | 10 |
|
| 6 | it could only be [vb pp] by | 10 |
|
