| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | to be [vb pp] [art] [noun] [det] | 8 |
|
| 2 | [prep] be [vb pp] [art] [noun sg] [det] | 8 |
|
| 3 | [prep] be [vb pp] a [noun] [det] | 6 |
|
