| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] by a [noun] | 1800 |
|
| 2 | be [vb pp] by a [noun sg] | 1707 |
|
| 3 | be [vb pp] [prep] a period | 61 |
|
| 4 | be [vb pp] [prep] a period | 61 |
|
| 5 | [be] [vb pp] by a period | 24 |
|
| 6 | be [vb pp] by a period | 24 |
|
| 7 | be [vb pp] by a period | 5 |
|
| 8 | be [vb pp] by a period | 5 |
|
| 9 | be [verb] by a period | 5 |
|
| 10 | be [vb pp] by [art] period | 5 |
|
| 11 | [be] [vb pp] by a period | 5 |
|
