| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] [vb pp] | 3866 |
|
| 2 | is [adv] [vb pp] [subord] | 960 |
|
| 3 | it is [adv] [subord] | 365 |
|
| 4 | it is [vb pp] [subord] | 206 |
|
| 5 | it [adv] [vb pp] [subord] | 7 |
|
