| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | [subord] it is | 16453 |
|
| 2 | it is [vb pp] | 14679 |
|
| 3 | [subord] is [vb pp] | 560 |
|
| 4 | [subord] it [vb pp] | 16 |
|
