| No | Pattern | Freq | Relations |
|---|---|---|---|
| 1 | it is [adv] | 29550 |
|
| 2 | is [adv] [vb pp] | 29146 |
|
| 3 | it is [vb pp] | 14689 |
|
| 4 | it [adv] [vb pp] | 364 |
|
