| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it be [vb pp] [prep] | 12840 |
|
| 2 | it be [vb pp] [to-vb] | 2093 |
|
| 3 | be [vb pp] [prep] [to-vb] | 392 |
|
| 4 | it be [prep] [to-vb] | 99 |
|
