| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [modal v] [be] [vb pp] by a | 1431 |
|
| 2 | [noun prp] [modal v] [be] [vb pp] by | 292 |
|
| 3 | [noun prp] [modal v] [be] [vb pp] a | 38 |
|
