| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | they can be [vb pp] only by | 9 |
|
| 2 | they can [be] [vb pp] only by | 9 |
|
| 3 | they can be [vb pp] only by | 9 |
|
| 4 | they can [be] [vb pp] only by | 9 |
|
