| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [prep] [be] [verb] [subord] | 11 |
|
| 2 | it [is] to [be] [verb] [subord] | 11 |
|
| 3 | it [is] [prep] [be] [vb pp] [subord] | 11 |
|
| 4 | it [is] [prep] be [verb] [subord] | 11 |
|
