| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [vb pp] | 14689 |
|
| 2 | [to-vb] it [vb pp] | 340 |
|
| 3 | [to-vb] it is | 278 |
|
| 4 | [to-vb] is [vb pp] | 206 |
|
