| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [prep] [art] [noun] | 121374 |
|
| 2 | be [verb] [prep] a [noun] | 37594 |
|
| 3 | [be] [vb pp] [prep] a [noun] | 32654 |
|
