| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [vb pp] [prep] | 4737 |
|
| 2 | it is [vb pp] that | 3811 |
|
| 3 | is [vb pp] that [prep] | 174 |
|
| 4 | it is that [prep] | 21 |
|
