| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | be [vb pp] [to-vb] [prep] [det] | 539 |
|
| 2 | be [vb pp] [to-vb] at [adj] | 92 |
|
| 3 | be [verb] [to-vb] at [det] | 59 |
|
| 4 | be [vb pp] [verb] at [det] | 42 |
|
| 5 | [be] [vb pp] [to-vb] at [det] | 31 |
|
