| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it [is] [vb pp] | 17495 |
|
| 2 | [is] [vb pp] [be] | 888 |
|
| 3 | it [is] [be] | 718 |
|
| 4 | it [vb pp] [be] | 7 |
|
